diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
index a1024f5..b6e6469 100644
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -29,6 +29,7 @@ jobs:
         curl -sSfL https://github.com/leanprover/elan/releases/download/v3.1.1/elan-x86_64-unknown-linux-gnu.tar.gz | tar xz
         ./elan-init -y --default-toolchain none
         echo "$HOME/.elan/bin" >> "${GITHUB_PATH}"
+        elan toolchain install $(<src/lean-toolchain)
 
     - name: Print lean and lake versions
       run: |