diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index d940c60..1a7fd19
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ opencv-python==4.1.1.26
 pandas==0.24.2
 Pillow==6.2.0
 pptk==0.1.0
-protobuf==3.10.0
+protobuf==3.18.3
 pykitti==0.3.1
 scikit-image==0.14.2
 scikit-learn==0.20.3