diff --git a/ci/elixir.yml b/ci/elixir.yml
index 9890efd..a8513c1 100644
--- a/ci/elixir.yml
+++ b/ci/elixir.yml
@@ -23,7 +23,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Set up Elixir
-      uses: erlef/setup-beam@v1
+      uses: erlef/setup-beam@61e01a43a562a89bfc54c7f9a378ff67b03e4a21 # v1.16.0
       with:
         elixir-version: '1.14.4' # Define the elixir version [required]
         otp-version: '25.3' # Define the OTP version [required]