diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e180374..08b1243 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,7 +35,10 @@ jobs:
         with:
           profile: minimal
           toolchain: ${{ matrix.rust }}
-          override: true
+          override: true          
+      - if: matrix.rust == '1.45.0'
+        # work-around https://github.com/serde-rs/serde/issues/2255
+        run: cargo update -p serde --precise 1.0.142
       - name: Check with no feature flags
         run: cargo check --verbose --no-default-features
         continue-on-error: ${{ matrix.allow_failure }}