diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2ad87b0..ffe4eff 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
 
     strategy:
       matrix:
-        image: ["swift:5.5", "swift:5.9", "swift:5.10", "swift:6.0"]
+        image: ["swift:5.9", "swift:5.10", "swift:6.0"]
 
     container:
       image: ${{ matrix.image }}