diff --git a/.version-determinate b/.version-determinate
index ac3a4bd51e63..a7e7070f80db 100644
--- a/.version-determinate
+++ b/.version-determinate
@@ -1 +1 @@
-3.21.9
+3.22.0
diff --git a/doc/manual/source/SUMMARY.md.in b/doc/manual/source/SUMMARY.md.in
index 5b16561a04aa..783dcb12b586 100644
--- a/doc/manual/source/SUMMARY.md.in
+++ b/doc/manual/source/SUMMARY.md.in
@@ -154,6 +154,7 @@
   - [Contributing](development/contributing.md)
 - [Determinate Nix Release Notes](release-notes-determinate/index.md)
   - [Changes between Nix and Determinate Nix](release-notes-determinate/changes.md)<!-- next -->
+  - [Release 3.22.0 (2026-08-06)](release-notes-determinate/v3.22.0.md)
   - [Release 3.21.9 (2026-07-30)](release-notes-determinate/v3.21.9.md)
   - [Release 3.21.8 (2026-07-20)](release-notes-determinate/v3.21.8.md)
   - [Release 3.21.7 (2026-07-15)](release-notes-determinate/v3.21.7.md)
diff --git a/doc/manual/source/release-notes-determinate/changes.md b/doc/manual/source/release-notes-determinate/changes.md
index f557e8f7fc65..b157d9c603b0 100644
--- a/doc/manual/source/release-notes-determinate/changes.md
+++ b/doc/manual/source/release-notes-determinate/changes.md
@@ -1,6 +1,6 @@
 # Changes between Nix and Determinate Nix
 
-This section lists the differences between upstream Nix 2.34 and Determinate Nix 3.21.9.<!-- differences -->
+This section lists the differences between upstream Nix 2.35 and Determinate Nix 3.22.0.<!-- differences -->
 
 * In Determinate Nix, flakes are stable. You no longer need to enable the `flakes` experimental feature.
 
@@ -224,3 +224,5 @@ This section lists the differences between upstream Nix 2.34 and Determinate Nix
 <!-- Determinate Nix version 3.21.8 -->
 
 <!-- Determinate Nix version 3.21.9 -->
+
+<!-- Determinate Nix version 3.22.0 -->
diff --git a/doc/manual/source/release-notes-determinate/v3.22.0.md b/doc/manual/source/release-notes-determinate/v3.22.0.md
new file mode 100644
index 000000000000..c7a0580bddca
--- /dev/null
+++ b/doc/manual/source/release-notes-determinate/v3.22.0.md
@@ -0,0 +1,25 @@
+# Release 3.22.0 (2026-08-06)
+
+* Based on [upstream Nix 2.35.1](../release-notes/rl-2.35.md).
+
+## Upstream Nix 2.35
+
+This release is based on upstream Nix 2.35.1, which includes numerous new features and performance improvements. See the [upstream release notes](../release-notes/rl-2.35.md) for more details.
+
+PRs: [DeterminateSystems/nix-src#530](https://github.com/DeterminateSystems/nix-src/pull/530), [DeterminateSystems/nix-src#584](https://github.com/DeterminateSystems/nix-src/pull/584)
+
+## Performance improvements
+
+* LocalStore: Reduce number of SQLite calls by @edolstra in [DeterminateSystems/nix-src#574](https://github.com/DeterminateSystems/nix-src/pull/574)
+* Use std::move_only_function for parallel eval work items by @edolstra in [DeterminateSystems/nix-src#585](https://github.com/DeterminateSystems/nix-src/pull/585)
+
+## Bug fixes
+
+* Progress bar signal handling improvements by @edolstra in [DeterminateSystems/nix-src#586](https://github.com/DeterminateSystems/nix-src/pull/586)
+* Prevent LocalCommand 'started' leak on stale SSH master socket by @DarthPJB in [DeterminateSystems/nix-src#569](https://github.com/DeterminateSystems/nix-src/pull/569)
+* Fix randomly failing build.sh test by @edolstra in [DeterminateSystems/nix-src#587](https://github.com/DeterminateSystems/nix-src/pull/587)
+
+## New Contributors
+* @DarthPJB made their first contribution in [DeterminateSystems/nix-src#569](https://github.com/DeterminateSystems/nix-src/pull/569)
+
+**Full Changelog**: [v3.21.9...v3.22.0](https://github.com/DeterminateSystems/nix-src/compare/v3.21.9...v3.22.0)
diff --git a/packaging/secure-packages/flake.lock b/packaging/secure-packages/flake.lock
index 651372b84652..77288f9b41fc 100644
--- a/packaging/secure-packages/flake.lock
+++ b/packaging/secure-packages/flake.lock
@@ -77,12 +77,12 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1785435372,
-        "narHash": "sha256-veAo2hsRG1Off47F+1HHgwarJVo/FjXUFv3A40ZUViY=",
-        "rev": "e87516da91e53b694a46eda0de22b782eb008d82",
-        "revCount": 1006668,
+        "lastModified": 1785959040,
+        "narHash": "sha256-XqYoFGaP8eGRiRRzAtfHFRUMDrN4sPdXXsdmdLKEDvc=",
+        "rev": "11bcae4108b62d9423d6eebc4b2bde45286d9fd2",
+        "revCount": 1011423,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/DeterminateSystems/secure-packages-26.05/0.1.1006668%2Brev-e87516da91e53b694a46eda0de22b782eb008d82/019fb45e-7a22-75f0-a9f9-a895378372a0/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/DeterminateSystems/secure-packages-26.05/0.1.1011423%2Brev-11bcae4108b62d9423d6eebc4b2bde45286d9fd2/019fd38f-01a2-7781-872d-a64af7252926/source.tar.gz"
       },
       "original": {
         "type": "tarball",