diff --git a/opencvlib/requirements.txt b/opencvlib/requirements.txt
index f13e601..f0bd31b 100644
--- a/opencvlib/requirements.txt
+++ b/opencvlib/requirements.txt
@@ -19,7 +19,7 @@ Augmentor==0.2.3
 Pillow==6.0.0
 beautifulsoup4==4.7.1
 funclib==2.1.6
-protobuf==3.7.1
+protobuf==3.18.3
 object_detection==0.0.3
 plotlib==0.3
 skimage==0.0