diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 632e8eb..495d796 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -4,6 +4,10 @@ updates:
     directory: /
     schedule:
       interval: weekly
+    groups:
+      codeql-action:
+        patterns:
+          - "github/codeql-action*"
   - package-ecosystem: gomod
     directory: /
     schedule:
diff --git a/.github/scripts/build-release-etcdutl.sh b/.github/scripts/build-release-etcdutl.sh
index ec3e7cd..26559d8 100644
--- a/.github/scripts/build-release-etcdutl.sh
+++ b/.github/scripts/build-release-etcdutl.sh
@@ -17,7 +17,7 @@ version='3.6.14'
 source_commit='fc04cf702b0a46c2fd85547a2be05705b100a496'
 source_archive_sha256='c02ebbf6af5f9266f111009fb8d585649a9fcafe5788c200f5a28a7f00d438f0'
 source_url="https://codeload.github.com/etcd-io/etcd/tar.gz/${source_commit}"
-go_version='go1.26.10'
+go_version='go1.26.11'
 
 # Resolve an explicitly selected toolchain once, then disallow automatic
 # switching and caller-specific build settings in both independent builds.
diff --git a/.github/scripts/check-release-binaries.sh b/.github/scripts/check-release-binaries.sh
index 6a865ba..9a8241a 100644
--- a/.github/scripts/check-release-binaries.sh
+++ b/.github/scripts/check-release-binaries.sh
@@ -48,7 +48,7 @@ EOF
 etcd_version='3.6.14'
 source_commit='fc04cf702b0a46c2fd85547a2be05705b100a496'
 source_archive_sha256='c02ebbf6af5f9266f111009fb8d585649a9fcafe5788c200f5a28a7f00d438f0'
-go_version='go1.26.10'
+go_version='go1.26.11'
 
 etcd_version_arg=''
 source_commit_arg=''
diff --git a/.github/workflow-policy.json b/.github/workflow-policy.json
index 7f03ab0..7722703 100644
--- a/.github/workflow-policy.json
+++ b/.github/workflow-policy.json
@@ -2,11 +2,11 @@
   "schemaVersion": 1,
   "canonicalization": "yq-json+jq-cS",
   "workflows": {
-    ".github/workflows/ci.yml": "68f3bebb4a4ff8d9f5d3515771d3ecbbef36aa52f05317983bcca38a4f755cf1",
+    ".github/workflows/ci.yml": "189aa44926c9e674c51b123af2261478b054ea02f664ae01bab56dd92229a872",
     ".github/workflows/cla-dco.yml": "5c3437cfa6ec997d97a3e9218a87114c1bb14f524e648d0df775f5bc6340430f",
-    ".github/workflows/license.yml": "198bc671c1cecf84eb48c7c79c278b0bac59b2a7dc878a4ceaba4dc38a15ebee",
-    ".github/workflows/release-provenance.yml": "4716203f96efdd36ef740b428a628d5102461265e0a0fe4d3c5518a35498ff2e",
-    ".github/workflows/security.yml": "dc488df05a12d95414c06675855109081bb76cb409d60957c19a4cbd7b7aa513",
-    ".github/workflows/supply-chain.yml": "47a900113cd6d217b7d40148d3dbdd801d6495b14d678c235d634b270f3b9159"
+    ".github/workflows/license.yml": "1f0fab8ad59a7054bfa0e2a976b032d7bc99e8322520e25e69b5f722731972e1",
+    ".github/workflows/release-provenance.yml": "b9ec9e0ead013094a3ea8b3e5f1d9bc5d64342a59ac84c5b547b7342d677847c",
+    ".github/workflows/security.yml": "fcb9611a4524fe169ab3d96d99634a3c5325f9a0f437bf1f3887cf674749b926",
+    ".github/workflows/supply-chain.yml": "e2aba9d701c975820bcff117210c931470a5a8fc5519e7fc107c4a9b05728ed3"
   }
 }
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0499842..0c3e20f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -32,7 +32,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Verify delivery roadmap
@@ -83,7 +83,7 @@ jobs:
           wait "${etcd_pid}" || true
           trap - EXIT
           chmod 0600 "${snapshot}"
-          GOTOOLCHAIN=go1.26.10 bash .github/scripts/build-release-etcdutl.sh \
+          GOTOOLCHAIN=go1.26.11 bash .github/scripts/build-release-etcdutl.sh \
             "${RUNNER_TEMP}/release-etcdutl"
           bash .github/scripts/check-release-binaries.sh "${RUNNER_TEMP}/release-etcdutl/etcdutl"
           CLOUDRING_TEST_ETCD_SNAPSHOT="${snapshot}" \
@@ -99,7 +99,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - run: go test -race ./... -count=1
@@ -108,7 +108,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     container:
-      image: golang:1.26.10-bookworm@sha256:23ce71337b726608afb1bc00986e630a05034a87a87ea1fc2cd1ae5cf33387eb
+      image: golang:1.26.11-bookworm@sha256:dc40a13b61304647ed7e5d581d246b86413dfc29d63c6d018310feb93cd98fc0
     services:
       postgres:
         image: postgres:18.6-bookworm@sha256:1c59e2c3c818eaa0f0628f695b36e7c9e362d6b219b36a54a32df645cbd7e1af
@@ -127,7 +127,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Test transactional state and public runtime against PostgreSQL
@@ -150,7 +150,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - run: go vet ./...
@@ -164,7 +164,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Verify generic platform manifests
@@ -183,7 +183,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Test minimum supported Go
@@ -198,7 +198,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Verify module graph and build
@@ -211,7 +211,7 @@ jobs:
           go build -mod=readonly -trimpath ./...
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Reproduce, scan and execute the complete release bundle
@@ -231,7 +231,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Validate every shipped connector package
@@ -253,7 +253,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Check conformance for the same shipped connector packages
@@ -307,7 +307,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Scan complete checkout
diff --git a/.github/workflows/license.yml b/.github/workflows/license.yml
index 7763910..fbbdfb1 100644
--- a/.github/workflows/license.yml
+++ b/.github/workflows/license.yml
@@ -26,7 +26,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - shell: bash
diff --git a/.github/workflows/release-provenance.yml b/.github/workflows/release-provenance.yml
index 9b1e72a..05d2cca 100644
--- a/.github/workflows/release-provenance.yml
+++ b/.github/workflows/release-provenance.yml
@@ -33,7 +33,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Independently reproduce release bundle and CycloneDX SBOM
@@ -95,7 +95,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
@@ -203,7 +203,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
@@ -247,7 +247,7 @@ jobs:
           test "$(dist/etcd-recovery-worker/etcdutl version)" = $'etcdutl version: 3.6.14\nAPI version: 3.6'
           tool_digest="$(sha256sum dist/etcd-recovery-worker/etcdutl | cut -d ' ' -f 1)"
           worker_digest="$(sha256sum dist/etcd-recovery-worker/cloudring-etcd-recovery-worker | cut -d ' ' -f 1)"
-          test "${tool_digest}" = '04c53c46f259a1c470a74c83d5a3a4a5d0b1e54db4d42dfaeb66ab78b3cb71cf'
+          test "${tool_digest}" = '9ada77511dce9263c24c8a0c116318d5384b1e348ace152da76aa65b62d17784'
           bash .github/scripts/check-release-binaries.sh dist/etcd-recovery-worker/*
           jq -n -cS \
             --arg source_commit "${GITHUB_SHA}" \
@@ -282,7 +282,7 @@ jobs:
                 purl: "pkg:github/etcd-io/etcd@v3.6.14",
                 properties: [
                   {name: "cloudring.upstream.source-commit", value: "fc04cf702b0a46c2fd85547a2be05705b100a496"},
-                  {name: "cloudring.upstream.build-compiler", value: "go1.26.10"}
+                  {name: "cloudring.upstream.build-compiler", value: "go1.26.11"}
                 ],
                 hashes: [{alg: "SHA-256", content: $tool_digest}]
               },
@@ -483,7 +483,7 @@ jobs:
             (.imageSubjectDigest | test("^sha256:[0-9a-f]{64}$")) and
             (.workerExecutableSha256 | test("^[0-9a-f]{64}$")) and
             .etcdutlVersion == "3.6.14" and
-            .etcdutlSha256 == "04c53c46f259a1c470a74c83d5a3a4a5d0b1e54db4d42dfaeb66ab78b3cb71cf" and
+            .etcdutlSha256 == "9ada77511dce9263c24c8a0c116318d5384b1e348ace152da76aa65b62d17784" and
             .baseImageName == "gcr.io/distroless/static-debian12:nonroot" and
             .baseImageDigest == "sha256:f5b485ea962d9bd1186b2f6b3a061191539b905b82ec395de78cbfae51f20e35" and
             (.containerfileSha256 | test("^[0-9a-f]{64}$")) and
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index b294e5f..d2de7b5 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -29,15 +29,15 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
-      - uses: github/codeql-action/init@7188fc363630916deb702c7fdcf4e481b751f97a # v4.37.1
+      - uses: github/codeql-action/init@33d7b85da1a04171e211befe2c739303b9a4c066 # v4.39.3
         with:
           languages: go
           config-file: ./.github/codeql/codeql-config.yml
-      - uses: github/codeql-action/autobuild@7188fc363630916deb702c7fdcf4e481b751f97a # v4.37.1
-      - uses: github/codeql-action/analyze@7188fc363630916deb702c7fdcf4e481b751f97a # v4.37.1
+      - uses: github/codeql-action/autobuild@33d7b85da1a04171e211befe2c739303b9a4c066 # v4.39.3
+      - uses: github/codeql-action/analyze@33d7b85da1a04171e211befe2c739303b9a4c066 # v4.39.3
 
   govulncheck:
     runs-on: ubuntu-latest
@@ -48,7 +48,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - run: go run golang.org/x/vuln/cmd/govulncheck@v1.6.0 ./...
@@ -62,7 +62,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - run: go run github.com/securego/gosec/v2/cmd/gosec@v2.27.1 -quiet -fmt=golint -tests -nosec-require-justification -nosec-require-rules ./...
@@ -77,7 +77,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Scan current tree and pushed history
diff --git a/.github/workflows/supply-chain.yml b/.github/workflows/supply-chain.yml
index 15c286a..a9961fb 100644
--- a/.github/workflows/supply-chain.yml
+++ b/.github/workflows/supply-chain.yml
@@ -26,7 +26,7 @@ jobs:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.10
+          go-version: 1.26.11
           check-latest: false
           cache: true
       - name: Validate workflow syntax
@@ -155,7 +155,7 @@ jobs:
                . == "actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c" or
                . == "actions/attest@f7c74d28b9d84cb8768d0b8ca14a4bac6ef463e6" or
                . == "docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f" or
-               test("^github/codeql-action/(init|autobuild|analyze)@7188fc363630916deb702c7fdcf4e481b751f97a$") or
+               test("^github/codeql-action/(init|autobuild|analyze)@33d7b85da1a04171e211befe2c739303b9a4c066$") or
                test("^docker://[^@[:space:]]+@sha256:[0-9a-f]{64}$"));
             def safe_image:
               type == "string" and
diff --git a/README.md b/README.md
index 39add47..7772204 100644
--- a/README.md
+++ b/README.md
@@ -232,7 +232,7 @@ operations, documentation, and developer experience.
 
 ## Validate a fresh clone
 
-Prerequisites: Git and Go 1.26.10 or a newer supported security patch. The development installer and CI use Go 1.26.10.
+Prerequisites: Git and Go 1.26.11 or a newer supported security patch. The development installer and CI use Go 1.26.11.
 
 ```bash
 git clone https://github.com/opencloudtech/CloudRING.git
diff --git a/contracts/etcd-recovery/README.md b/contracts/etcd-recovery/README.md
index 09ff3db..c5d7790 100644
--- a/contracts/etcd-recovery/README.md
+++ b/contracts/etcd-recovery/README.md
@@ -32,9 +32,9 @@ object key/version and credentials never appear in tool arguments, environment,
 stdout, stderr or receipts.
 
 `etcdutl` 3.6.14 is content-pinned to
-`04c53c46f259a1c470a74c83d5a3a4a5d0b1e54db4d42dfaeb66ab78b3cb71cf`
+`9ada77511dce9263c24c8a0c116318d5384b1e348ace152da76aa65b62d17784`
 before execution. This executable is rebuilt from the unchanged official source
-with Go 1.26.10 and retained symbols using the [release build procedure](../../docs/releasing.md);
+with Go 1.26.11 and retained symbols using the [release build procedure](../../docs/releasing.md);
 its source and build identity are retained as `etcdutl-source.json`.
 Source `hashkv` runs only against a verified disposable
 private copy, because upstream `hashkv` can mutate bbolt metadata. The restored
diff --git a/contracts/etcd-recovery/image-identity.schema.json b/contracts/etcd-recovery/image-identity.schema.json
index 25c1073..c311814 100644
--- a/contracts/etcd-recovery/image-identity.schema.json
+++ b/contracts/etcd-recovery/image-identity.schema.json
@@ -32,7 +32,7 @@
     "imageSubjectDigest": {"$ref": "#/$defs/imageDigest"},
     "workerExecutableSha256": {"$ref": "#/$defs/sha"},
     "etcdutlVersion": {"const": "3.6.14"},
-    "etcdutlSha256": {"const": "04c53c46f259a1c470a74c83d5a3a4a5d0b1e54db4d42dfaeb66ab78b3cb71cf"},
+    "etcdutlSha256": {"const": "9ada77511dce9263c24c8a0c116318d5384b1e348ace152da76aa65b62d17784"},
     "baseImageName": {"const": "gcr.io/distroless/static-debian12:nonroot"},
     "baseImageDigest": {"const": "sha256:f5b485ea962d9bd1186b2f6b3a061191539b905b82ec395de78cbfae51f20e35"},
     "containerfileSha256": {"$ref": "#/$defs/sha"},
diff --git a/contracts/etcd-recovery/receipt.schema.json b/contracts/etcd-recovery/receipt.schema.json
index e9b9e91..3599d3e 100644
--- a/contracts/etcd-recovery/receipt.schema.json
+++ b/contracts/etcd-recovery/receipt.schema.json
@@ -30,7 +30,7 @@
       "properties": {
         "name": {"const": "etcdutl"},
         "version": {"const": "3.6.14"},
-        "executableSha256": {"const": "04c53c46f259a1c470a74c83d5a3a4a5d0b1e54db4d42dfaeb66ab78b3cb71cf"}
+        "executableSha256": {"const": "9ada77511dce9263c24c8a0c116318d5384b1e348ace152da76aa65b62d17784"}
       }
     },
     "sourceStatusSha256": {"$ref": "#/$defs/sha"},
diff --git a/contracts/etcd-recovery/request.schema.json b/contracts/etcd-recovery/request.schema.json
index bae0170..8a0c1d1 100644
--- a/contracts/etcd-recovery/request.schema.json
+++ b/contracts/etcd-recovery/request.schema.json
@@ -27,7 +27,7 @@
     "workerExecutableSha256": {"$ref": "#/$defs/sha"},
     "workerImageDigest": {"type": "string", "pattern": "^sha256:[0-9a-f]{64}$"},
     "etcdutlVersion": {"const": "3.6.14"},
-    "etcdutlSha256": {"const": "04c53c46f259a1c470a74c83d5a3a4a5d0b1e54db4d42dfaeb66ab78b3cb71cf"},
+    "etcdutlSha256": {"const": "9ada77511dce9263c24c8a0c116318d5384b1e348ace152da76aa65b62d17784"},
     "issuedAt": {"type": "string", "format": "date-time"},
     "expiresAt": {"type": "string", "format": "date-time"},
     "timeoutSeconds": {"type": "integer", "minimum": 1, "maximum": 1800}
diff --git a/docs/ci-checks.md b/docs/ci-checks.md
index 42d7e85..7b8735d 100644
--- a/docs/ci-checks.md
+++ b/docs/ci-checks.md
@@ -102,7 +102,7 @@ the bundle checksum, and creates GitHub artifact attestations.
 The recovery image job independently reproduces the worker binary and two OCI image
 layouts, checks their Linux AMD64 subject manifest digests are identical, and
 requires the separately pushed registry subject to match that reviewed digest.
-The official `etcdutl` 3.6.14 source is rebuilt twice with Go 1.26.10 and
+The official `etcdutl` 3.6.14 source is rebuilt twice with Go 1.26.11 and
 independent caches. The source archive, rebuilt binary, BuildKit, Dockerfile frontend,
 Buildx and Syft inputs are immutable-version or content pinned. The job
 publishes only `sha-<commit>`, creates a real Syft image-package SBOM plus a
diff --git a/docs/development-installation.md b/docs/development-installation.md
index 046d221..c697458 100644
--- a/docs/development-installation.md
+++ b/docs/development-installation.md
@@ -57,7 +57,7 @@ substitute `latest` images or an unverified BOM.
 
 Linux users can use the verified `cloudring-linux-amd64` asset as `cloudring`.
 Linux and macOS users can also build the client from the clean public release
-checkout with Go 1.26.10 or a newer supported security release:
+checkout with Go 1.26.11 or a newer supported security release:
 
 ```sh
 go build -o ./cloudring ./cmd/cloudring
diff --git a/docs/releasing.md b/docs/releasing.md
index a0ba4a2..d58ba59 100644
--- a/docs/releasing.md
+++ b/docs/releasing.md
@@ -23,7 +23,7 @@ the exact Go toolchain pinned in the workflow, Linux/amd64 target, GNU tar and
 Python 3 (standard-library UUID generation only);
 using a different compiler is a different build input.
 
-The release compiler is Go 1.26.10, a supported patch release. The required
+The release compiler is Go 1.26.11, a supported patch release. The required
 pull-request build check also reproduces the complete bundle with this exact
 compiler. Before artifacts are uploaded or attested, pinned `govulncheck`
 examines every compiled command, including the recovery worker and its upstream
diff --git a/go.mod b/go.mod
index 1694a66..c01b7e6 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/opencloudtech/CloudRING
 
-go 1.26.10
+go 1.26.11
 
 require (
 	github.com/jackc/pgx/v5 v5.11.0
diff --git a/pkg/backup/etcdrecovery/types.go b/pkg/backup/etcdrecovery/types.go
index f6dfbae..2715926 100644
--- a/pkg/backup/etcdrecovery/types.go
+++ b/pkg/backup/etcdrecovery/types.go
@@ -17,7 +17,7 @@ const (
 	SandboxStateSchemaVersion    = "cloudring.etcd-recovery.sandbox-state/v1"
 	ToolName                     = "etcdutl"
 	ToolVersion                  = "3.6.14"
-	ToolSHA256                   = "04c53c46f259a1c470a74c83d5a3a4a5d0b1e54db4d42dfaeb66ab78b3cb71cf"
+	ToolSHA256                   = "9ada77511dce9263c24c8a0c116318d5384b1e348ace152da76aa65b62d17784"
 
 	DefaultRequestPath     = "/run/cloudring/request/request.json"
 	DefaultArchivePath     = "/run/cloudring/archive/snapshot.db"
diff --git a/reference/synthetic-service/Containerfile b/reference/synthetic-service/Containerfile
index 9fbcbb1..e566fa0 100644
--- a/reference/synthetic-service/Containerfile
+++ b/reference/synthetic-service/Containerfile
@@ -1,4 +1,4 @@
-FROM golang:1.26.10-bookworm@sha256:23ce71337b726608afb1bc00986e630a05034a87a87ea1fc2cd1ae5cf33387eb AS build
+FROM golang:1.26.11-bookworm@sha256:dc40a13b61304647ed7e5d581d246b86413dfc29d63c6d018310feb93cd98fc0 AS build
 
 WORKDIR /src
 COPY go.mod ./