diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index d1b8f8b..2cb7b1a
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ coverage==7.0.5
 cycler==0.11.0
 exceptiongroup==1.1.0
 flake8==5.0.4
-fonttools==4.38.0
+fonttools==4.43.0
 iniconfig==2.0.0
 kiwisolver==1.4.4
 matplotlib==3.6.3