diff --git a/.github/workflows/deploy-docs.yaml b/.github/workflows/deploy-docs.yaml
index c9ed2cb56..f3447581b 100644
--- a/.github/workflows/deploy-docs.yaml
+++ b/.github/workflows/deploy-docs.yaml
@@ -32,7 +32,7 @@ jobs:
           fetch-depth: 0
 
       - name: Build docs
-        uses: docker://ghcr.io/bjw-s/mdbook:0.4.37@sha256:b5cbae6a9eb60e28793e6e31bad90e7bf8761e719c1caf959d1b4b35cfee7f91
+        uses: docker://ghcr.io/bjw-s/mdbook:0.4.37@sha256:b99fc44ff412b9eaeb0272d059ada9258c383b1c0fddbd947f5176588d38d8b3
         with:
           args: bash -c "cd docs && mdbook build"