diff --git a/Doc/docs-requirements.txt b/Doc/docs-requirements.txt
index 4269223fb..c43b92471 100644
--- a/Doc/docs-requirements.txt
+++ b/Doc/docs-requirements.txt
@@ -1,4 +1,4 @@
-sphinx==7.4.3
+sphinx==8.0.2
 sphinx_rtd_theme==2.0.0
 reportlab==4.2.2
 freetype-py==2.4.0
diff --git a/dev-requirements.txt b/dev-requirements.txt
index a2eea1b01..13bebe81f 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -6,4 +6,4 @@ mypy>=0.782
 readme_renderer[md]>=43.0
 
 # Pin black as each version could change formatting, breaking CI randomly.
-black==24.4.2
+black==24.8.0
diff --git a/requirements.txt b/requirements.txt
index d9632cad0..2fde2798d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,10 +11,10 @@ fs==2.4.16
 skia-pathops==0.8.0.post1; platform_python_implementation != "PyPy"
 # this is only required to run Tests/cu2qu/{ufo,cli}_test.py
 ufoLib2==0.16.0
-ufo2ft==3.2.5
+ufo2ft==3.2.7
 pyobjc==10.3.1; sys_platform == "darwin"
 freetype-py==2.4.0
 uharfbuzz==0.39.3
-glyphsLib==6.7.1 # this is only required to run Tests/varLib/interpolatable_test.py
-lxml==5.2.2
-sympy==1.13.0
+glyphsLib==6.8.0 # this is only required to run Tests/varLib/interpolatable_test.py
+lxml==5.3.0
+sympy==1.13.2