diff --git a/requirements.txt b/requirements.txt
index aab98c1d4..28d62d1f2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,11 +3,11 @@
 brotli==1.0.9; platform_python_implementation != "PyPy"
 brotlicffi==1.0.9.2; platform_python_implementation == "PyPy"
 unicodedata2==13.0.0.post2; python_version < '3.9' and platform_python_implementation != "PyPy"
-scipy==1.7.1; platform_python_implementation != "PyPy"
+scipy==1.7.2; platform_python_implementation != "PyPy"
 munkres==1.1.4; platform_python_implementation == "PyPy"
-zopfli==0.1.8
+zopfli==0.1.9
 fs==2.4.13
 skia-pathops==0.7.1; platform_python_implementation != "PyPy"
 # this is only required to run Tests/cu2qu/{ufo,cli}_test.py
-ufoLib2==0.11.4
-pyobjc==7.3; sys_platform == "darwin"
+ufoLib2==0.12.1
+pyobjc==8.0; sys_platform == "darwin"