diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4867544..704e6ea 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,12 +8,6 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.64.0
-          - 1.65.0
-          - 1.66.1
-          - 1.67.1
-          - 1.68.2
-          - 1.69.0
           - 1.70.0
           - 1.71.1
           - 1.72.0