diff --git a/.github/workflows/test-coverage.yml b/.github/workflows/test-coverage.yml
index c774bdf864c9..232f79fb8947 100644
--- a/.github/workflows/test-coverage.yml
+++ b/.github/workflows/test-coverage.yml
@@ -29,6 +29,8 @@ env:
   CARGO_LLVM_COV: 1
   CARGO_LLVM_COV_SHOW_ENV: 1
   CARGO_LLVM_COV_TARGET_DIR: ${{ github.workspace }}/target
+  # We use the stable ABI, silences error from PyO3 that the system Python is too new.
+  PYO3_USE_ABI3_FORWARD_COMPATIBILITY: 1
 
 jobs:
   coverage-rust: