diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6655c793..a0f5106f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
     - uses: actions/checkout@v3
 
     - name: Set up Elixir
-      uses: erlef/setup-beam@v1
+      uses: erlef/setup-beam@fc68ffb90438ef2936bbb3251622353b3dcb2f93 # v1
       with:
         elixir-version: '1.14.2' # Define the elixir version [required]
         otp-version: '25.3' # Define the OTP version [required]