diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d094e20..d040a70 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -66,7 +66,7 @@ jobs:
         cargo +nightly update -p log --precise 0.4.4
 
     - name: Install 1.73.0 toolchain
-      uses: dtolnay/rust-toolchain@stable
+      uses: dtolnay/rust-toolchain@1.73.0
 
     - name: Set up cargo cache
       uses: actions/cache@v3