diff --git a/.github/workflows/docs-release.yaml b/.github/workflows/docs-release.yaml
index 51702a58..b4114432 100644
--- a/.github/workflows/docs-release.yaml
+++ b/.github/workflows/docs-release.yaml
@@ -30,7 +30,7 @@ jobs:
           fetch-depth: 0
 
       - name: Build docs
-        uses: docker://ghcr.io/bjw-s/mdbook:0.4.34@sha256:d97e8631722044d48be75da84eb10e737d480a4e20b52ed654df5724fb45dde0
+        uses: docker://ghcr.io/bjw-s/mdbook:0.4.34@sha256:a9e9849832d38362a9918b5bd4026061a6771250d4114f006b0cc947c0d6a665
         with:
           args: bash -c "cd docs && mdbook build"