diff --git a/utils/build-script-impl b/utils/build-script-impl
index bced37215db7b..07bd48ba9c0dc 100755
--- a/utils/build-script-impl
+++ b/utils/build-script-impl
@@ -3124,8 +3124,11 @@ function build_and_test_installable_package() {
             with_pushd "${PKG_TESTS_SANDBOX_PARENT}" \
                 call tar xzf "${package_for_host}"
 
+            if python -c "import psutil" ; then
+              TIMEOUT_ARGS=--timeout=1200 # 20 minutes
+            fi
             with_pushd "${PKG_TESTS_SOURCE_DIR}" \
-                call python "${LIT_EXECUTABLE_PATH}" . -sv --param package-path="${PKG_TESTS_SANDBOX}" --param test-exec-root="${PKG_TESTS_TEMPS}" --param llvm-bin-dir="${LLVM_BIN_DIR}"
+                call python "${LIT_EXECUTABLE_PATH}" . -sv --param package-path="${PKG_TESTS_SANDBOX}" --param test-exec-root="${PKG_TESTS_TEMPS}" --param llvm-bin-dir="${LLVM_BIN_DIR}" ${TIMEOUT_ARGS}
         fi
     fi
 }