diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
index 5ea49fa2d..df52be5d8 100644
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -45,7 +45,7 @@ jobs:
           enablement: true
 
       - name: Build docs
-        uses: docker://ghcr.io/bjw-s/mdbook:0.4.40@sha256:ee94f40cb3fa7e6d6b07d0f0ccf50afae63b9602f7eb9981941ef6d80665834e
+        uses: docker://ghcr.io/bjw-s/mdbook:0.4.40@sha256:d6867a09139dbf8c432b9f3417a2ff36eea7509acfac1aceb2d85047f7d63181
         with:
           args: mdbook build docs