diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3e7ede8..44a3c42 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,7 @@ jobs:
       matrix:
         os: [ubuntu-18.04]
         otp: [24.3.3]
-        elixir: [1.12]
+        elixir: [1.12.3]
         node: [12.8.0]
 
     steps: