diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7ec5592..1c69a22 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -25,7 +25,7 @@ jobs:
     strategy:
       matrix:
         toolchain:
-          - 1.56
+          - 1.65
           - nightly
         os:
           - ubuntu-latest