diff --git a/docker/daytona-runner/Dockerfile b/docker/daytona-runner/Dockerfile
index 7fc23797c1..64bea4bf36 100644
--- a/docker/daytona-runner/Dockerfile
+++ b/docker/daytona-runner/Dockerfile
@@ -12,7 +12,7 @@ COPY packages/paperclip-runner/protocol ../protocol
 RUN cargo build --locked --release -j 2 -p paperclip-runner-core --bin paperclip-runnerd \
     && strip /workspace/packages/paperclip-runner/runner/target/release/paperclip-runnerd
 
-FROM node:24-bookworm@sha256:9137a20e25879e0b557227b57e3ee4e9af4bde29eb3db66134cd1723e84f830b AS provider-pack-build
+FROM node:24.21.0-bookworm@sha256:5a750d3be5e5c80275f8c9a5367c3aed99c2875656590c8d0701c7ee687f5f0a AS provider-pack-build
 RUN corepack enable && corepack prepare pnpm@9.15.4 --activate
 WORKDIR /workspace
 COPY package.json pnpm-lock.yaml pnpm-workspace.yaml .npmrc tsconfig.base.json ./
diff --git a/docker/daytona-runner/README.md b/docker/daytona-runner/README.md
index 3d4fb80b53..cd54962638 100644
--- a/docker/daytona-runner/README.md
+++ b/docker/daytona-runner/README.md
@@ -94,6 +94,12 @@ full Git SHA as `PAPERCLIP_RUNNER_SOURCE_REVISION`.
 Do not bake provider credentials, Paperclip bootstrap tickets, or Daytona
 preview tokens into this image. They remain per-run secret material.
 
+The provider-pack build pins the official Linux x64 Node 24.21.0 image by
+manifest digest. Its bundled Undici is 7.29.1, which fixes
+[GHSA-3wwx-pv8p-q78v](https://github.com/advisories/GHSA-3wwx-pv8p-q78v).
+Pi separately verifies its private Node executable and nested npm dependency;
+changing the outer interpreter does not replace either provider-owned pin.
+
 Provider CLI updates are manifest-only changes: repository CI owns the root
 lockfile. Resolve the complete workspace manifest graph in the build context
 before invoking Docker, matching CI when a source commit precedes the lockfile
diff --git a/tests/runner-e2e/daytona-image.test.ts b/tests/runner-e2e/daytona-image.test.ts
index 45205e6678..3087aab83e 100644
--- a/tests/runner-e2e/daytona-image.test.ts
+++ b/tests/runner-e2e/daytona-image.test.ts
@@ -82,7 +82,7 @@ describe("runner E2E Daytona image contract", () => {
     );
     expect(extractDaytonaBaseImages(dockerfile)).toEqual([
       "rust:1.97-bookworm@sha256:408fe88047cef61a2087653b0c5255fa51c0f2d6d94ddedd7a2562a9b91a46f6",
-      "node:24-bookworm@sha256:9137a20e25879e0b557227b57e3ee4e9af4bde29eb3db66134cd1723e84f830b",
+      "node:24.21.0-bookworm@sha256:5a750d3be5e5c80275f8c9a5367c3aed99c2875656590c8d0701c7ee687f5f0a",
       "daytonaio/sandbox:0.8.0@sha256:eadf88e4391072b7ad4bed27d9cadfc9fe9d8ed375d9219d34c2ccb518f213e3",
     ]);
     expect(dockerignore).toContain("**/node_modules");