diff --git a/renovate.json b/renovate.json
new file mode 100644
index 0000000..573fe28
--- /dev/null
+++ b/renovate.json
@@ -0,0 +1,16 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": ["config:recommended", "docker:pinDigests", "helpers:pinGitHubActionDigests"],
+  "customManagers": [
+    {
+      "customType": "regex",
+      "description": "Track the crossplane/crossplane release the vendored run_function.proto was copied from",
+      "managerFilePatterns": ["/^sdk/proto/v1/run_function\\.proto$/"],
+      "matchStrings": [
+        "Vendored from crossplane/crossplane (?<currentValue>v\\d+\\.\\d+\\.\\d+)\\."
+      ],
+      "datasourceTemplate": "github-releases",
+      "depNameTemplate": "crossplane/crossplane"
+    }
+  ]
+}
diff --git a/sdk/proto/v1/run_function.proto b/sdk/proto/v1/run_function.proto
index e58a4b5..678a01c 100644
--- a/sdk/proto/v1/run_function.proto
+++ b/sdk/proto/v1/run_function.proto
@@ -14,6 +14,11 @@
    limitations under the License.
 */
 
+// Vendored from crossplane/crossplane v2.4.0. To update: bump the version
+// above, re-download this file from
+// https://github.com/crossplane/crossplane/blob/main/proto/fn/v1/run_function.proto,
+// and re-run `cargo run -p codegen`.
+
 syntax = "proto3";
 
 // This package defines the RPC for both composition and operation functions.