diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 010bc13e3..50ebac690 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -42,6 +42,15 @@ jobs:
       env:
         RUSTUP_TOOLCHAIN: stable
 
+    - name: Install `mdbook-toc`
+      uses: actions-rs/install@v0.1
+      with:
+        crate: mdbook-toc
+        version: latest
+        use-tool-cache: false
+      env:
+        RUSTUP_TOOLCHAIN: stable
+
     - name: Build user Documentation
       run: |
         cd coreutils