diff --git a/requirements.txt b/requirements.txt
index 0cd8ee1c..7346933f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 fonttools[unicode,ufo,lxml]==4.28.2; platform_python_implementation == 'CPython'
 fonttools[unicode,ufo]==4.28.2; platform_python_implementation != 'CPython'
 cu2qu==1.6.7.post1
-glyphsLib==6.0.0b6
+glyphsLib==6.0.0
 ufo2ft[pathops]==2.25.1
 MutatorMath==3.0.1
 fontMath==0.8.1
diff --git a/setup.py b/setup.py
index 4cb59f0d..e1ad3d74 100644
--- a/setup.py
+++ b/setup.py
@@ -54,12 +54,12 @@
     setup_requires=wheel + ["setuptools_scm"],
     python_requires=">=3.7",
     install_requires=[
-        "fonttools[ufo,lxml,unicode]>=4.21.1 ; platform_python_implementation == 'CPython'",
-        "fonttools[ufo,unicode]>=4.21.1 ; platform_python_implementation != 'CPython'",
-        "glyphsLib>=6.0.0b4",
-        "ufo2ft[compreffor]>=2.20.0",
-        "fontMath>=0.6.0",
-        "ufoLib2>=0.8.0",
+        "fonttools[ufo,lxml,unicode]>=4.28.2 ; platform_python_implementation == 'CPython'",
+        "fonttools[ufo,unicode]>=4.28.2 ; platform_python_implementation != 'CPython'",
+        "glyphsLib>=6.0.0",
+        "ufo2ft[compreffor]>=2.25.1",
+        "fontMath>=0.8.1",
+        "ufoLib2>=0.12.1",
         "attrs>=19",
     ],
     extras_require=extras_require,