diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1ca0dc96..36ec409e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,7 +38,6 @@ jobs:
       matrix:
         stable: [true]
         crystal:
-          - 1.6.2
           - 1.7.3
           - 1.8.2
           - 1.9.2