diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
index c024577c..a07c32ca 100644
--- a/.github/workflows/static.yml
+++ b/.github/workflows/static.yml
@@ -16,6 +16,7 @@ jobs:
         ]
         toolchain: [
           stable,
+          1.66.1
         ]
     steps:
       - name: Checkout