diff --git a/build_tools/linkchecker/requirements.txt b/build_tools/linkchecker/requirements.txt
old mode 100755
new mode 100644
index a05751f0a..f772a3fad
--- a/build_tools/linkchecker/requirements.txt
+++ b/build_tools/linkchecker/requirements.txt
@@ -1,2 +1,2 @@
 LinkChecker==9.3
-requests==2.7.0
+requests==2.33.0