diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 8e9e40014a6b2..7f354bbd65790 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -30,7 +30,7 @@ jobs:
         run: vale .
 
       - name: Install Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@5f19ec79cedfadb78ab837f95b87734d0003c899 # v1.173.0
         with:
           ruby-version: "3.1"
           bundler-cache: true
@@ -70,7 +70,7 @@ jobs:
           path: rubydoc
 
       - name: Install Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@5f19ec79cedfadb78ab837f95b87734d0003c899 # v1.173.0
         with:
           ruby-version: "3.1"
           bundler-cache: true