diff --git a/.gitignore b/.gitignore
index 2ffc52c..99f8abd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@ weights/
 data/
 tmp/
 external/
+!utils/*.so
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]
diff --git a/utils/timer.py b/utils/timer.py
old mode 100755
new mode 100644
diff --git a/utils/utils.py b/utils/utils.py
old mode 100755
new mode 100644