diff --git a/.github/workflows/pull-request-check-rust-api.yaml b/.github/workflows/pull-request-check-rust-api.yaml
index a66a0ef6ecf..35865abac33 100644
--- a/.github/workflows/pull-request-check-rust-api.yaml
+++ b/.github/workflows/pull-request-check-rust-api.yaml
@@ -102,6 +102,7 @@ jobs:
       # by the other jobs already present in `pull-request-checks.yaml`.
       - name: Run Rust API tests
         run: |
+          export MACOSX_DEPLOYMENT_TARGET=10.15
           VERSION=$(cat src/config.inc | python3 -c "import sys,re;line = [line for line in sys.stdin if re.search(r'CBMC_VERSION = (\d+\.\d+\.\d+)', line)];sys.stdout.write(re.search(r'CBMC_VERSION = (\d+\.\d+\.\d+)', line[0]).group(1))")
           cd src/libcprover-rust;\
           cargo clean;\