diff --git a/.ci/build/post_build.py b/.ci/build/post_build.py
index 7e2911b..19cb95e 100644
--- a/.ci/build/post_build.py
+++ b/.ci/build/post_build.py
@@ -25,6 +25,8 @@
 for name in ["DYLD_LIBRARY_PATH", "LD_LIBRARY_PATH"]:
     environment[name] = os.pathsep.join([
         lib_dir, *os.environ.get(name, "").split(os.pathsep)])
+environment["PATH"] = os.pathsep.join([
+    bin_dir, *os.environ.get("PATH", "").split(os.pathsep)])
 cpp_tests_return_code = subprocess.call(
     ["ctest"], cwd=build_dir, env=environment)