diff --git a/pyproject.toml b/pyproject.toml
index 5d94857..7e20fd1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,21 +39,21 @@ email = "floss@frequenz.com"
 
 [project.optional-dependencies]
 dev-flake8 = [
-  "flake8 == 7.2.0",
+  "flake8 == 7.3.0",
   "flake8-docstrings == 1.7.0",
   "flake8-pyproject == 1.2.3", # For reading the flake8 config from pyproject.toml
   "pydoclint == 0.7.3",
   "pydocstyle == 6.3.0",
   "frequenz-client-base",
 ]
-dev-formatting = ["black == 25.1.0", "isort == 6.0.1"]
+dev-formatting = ["black == 25.9.0", "isort == 6.0.1"]
 dev-mkdocs = [
-  "black == 25.1.0",
-  "Markdown==3.8.2",
+  "black == 25.9.0",
+  "Markdown==3.9",
   "mike == 2.1.3",
   "mkdocs-gen-files == 0.5.0",
   "mkdocs-literate-nav == 0.6.2",
-  "mkdocs-macros-plugin == 1.3.7",
+  "mkdocs-macros-plugin == 1.4.0",
   "mkdocs-material == 9.6.15",
   "mkdocstrings[python] == 0.30.1",
   "mkdocstrings-python == 1.18.2",
@@ -61,9 +61,9 @@ dev-mkdocs = [
   "frequenz-client-base",
 ]
 dev-mypy = [
-  "mypy == 1.16.1",
-  "types-Markdown == 3.8.0.20250415",
-  "types-protobuf == 6.30.2.20250516",
+  "mypy == 1.18.2",
+  "types-Markdown == 3.9.0.20250906",
+  "types-protobuf == 6.32.1.20250918",
   "grpc-stubs == 1.53.0.6", # This dependency introduces breaking changes in patch releases
   # For checking the noxfile, docs/ script, and tests
   "frequenz-client-base[dev-mkdocs,dev-noxfile,dev-pytest]",
@@ -75,12 +75,12 @@ dev-pylint = [
   "frequenz-client-base[dev-mkdocs,dev-noxfile,dev-pytest]",
 ]
 dev-pytest = [
-  "pytest == 8.3.5",
+  "pytest == 8.4.2",
   "frequenz-repo-config[extra-lint-examples] == 0.13.5",
-  "pytest-mock == 3.14.1",
+  "pytest-mock == 3.15.1",
   "pytest-asyncio == 1.1.0",
   "async-solipsism == 0.8",
-  "hypothesis == 6.132.0",
+  "hypothesis == 6.140.2",
   "frequenz-client-base",
 ]
 dev = [