diff --git a/requirements.txt b/requirements.txt
index 244c73c2..0d548683 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,15 +1,15 @@
-fonttools[unicode,ufo,lxml,repacker]==4.42.0; platform_python_implementation == 'CPython'
-fonttools[unicode,ufo,repacker]==4.42.0; platform_python_implementation != 'CPython'
-glyphsLib==6.2.5
+fonttools[lxml,unicode,ufo,repacker]==4.43.1; platform_python_implementation == 'CPython'
+fonttools[unicode,ufo,repacker]==4.43.1; platform_python_implementation != 'CPython'
+glyphsLib==6.4.1
 ufo2ft==2.33.4
 fontMath==0.9.3
 booleanOperations==0.9.0
 ufoLib2==0.16.0
 attrs==23.1.0
 cffsubr==0.2.9.post1
-compreffor==0.5.3
+compreffor==0.5.5
 ttfautohint-py==0.5.1
 
 # optional, for experimental reading/writing ufoLib2's UFO as json
 cattrs==23.1.2
-orjson==3.9.3; platform_python_implementation == 'CPython'
+orjson==3.9.10; platform_python_implementation == 'CPython'