diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 44c9d10..d2bcfa9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, macos-11.0, ubuntu-latest]
-        go-version: [1.15, 1.16.2]
+        go-version: [1.15, 1.16.5]
         ruby-version: [2.7]
 
     name: ${{ matrix.os }} / go-${{ matrix.go-version }}