diff --git a/script/cibuild b/script/cibuild
index 3f0ae560..e04a8b50 100755
--- a/script/cibuild
+++ b/script/cibuild
@@ -18,5 +18,7 @@ if [ x"$SPEC" = "xtrue" ]; then
 	python3 entity_tests.py --program='../../../target/debug/comrak --syntax-highlighting none'
 else
 	cargo test --verbose
+	echo "=== Running C API tests... ==="
+	cargo run --manifest-path=./c-api/tests/Cargo.toml
 	cargo run --example sample
 fi