diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index fb970b5c..03c17e2c
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ MarkupSafe==1.0
 numpy==1.17.0
 olefile==0.44
 Pillow==4.3.0
-protobuf==3.5.1
+protobuf==3.15.0
 six==1.11.0
 Werkzeug==0.14.1
 wikipedia==1.4.0
diff --git a/setup.py b/setup.py
old mode 100755
new mode 100644
index f3d57179..7550af11
--- a/setup.py
+++ b/setup.py
@@ -23,7 +23,7 @@
         'numpy==1.17.0',
         'olefile==0.44',
         'Pillow==6.1.0',
-        'protobuf==3.5.1',
+        'protobuf==3.15.0',
         'six==1.11.0',
         'Werkzeug==0.14.1',
         'wikipedia==1.4.0',