diff --git a/DeepPATH_code/requirements.txt b/DeepPATH_code/requirements.txt
old mode 100755
new mode 100644
index 01cc97b..ffafda3
--- a/DeepPATH_code/requirements.txt
+++ b/DeepPATH_code/requirements.txt
@@ -150,7 +150,7 @@ ppft==1.6.4.8
 preshed==1.0.1
 prometheus-client==0.3.0
 prompt-toolkit==1.0.15
-protobuf==3.6.1
+protobuf==3.18.3
 prov==1.5.3
 psutil==5.7.0
 psycopg2==2.7.5