diff --git a/tagger/src/requirements.txt b/tagger/src/requirements.txt
old mode 100755
new mode 100644
index cae87c5..11a4660
--- a/tagger/src/requirements.txt
+++ b/tagger/src/requirements.txt
@@ -21,7 +21,7 @@ Markdown==2.6.11
 MarkupSafe==1.0
 numpy==1.14.2
 Pillow==5.0.0
-protobuf==3.5.2.post1
+protobuf==3.18.3
 PyYAML==3.12
 redis==2.10.6
 requests==2.18.4