diff --git a/pyproject.toml b/pyproject.toml
index db0108d..8819a80 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,10 +53,10 @@ dev-flake8 = [
   "pydoclint == 0.8.3",
   "pydocstyle == 6.3.0",
 ]
-dev-formatting = ["black == 26.3.1", "isort == 8.0.1"]
+dev-formatting = ["black == 26.5.1", "isort == 8.0.1"]
 dev-mkdocs = [
   "Markdown == 3.10.2",
-  "black == 26.3.1",
+  "black == 26.5.1",
   "mike == 2.2.0",
   "mkdocs-gen-files == 0.6.1",
   "mkdocs-literate-nav == 0.6.3",
@@ -85,7 +85,7 @@ dev-pytest = [
   "pytest-mock == 3.15.1",
   "pytest-asyncio == 1.3.0",
   "async-solipsism == 0.9",
-  "hypothesis == 6.152.4",
+  "hypothesis == 6.155.1",
 ]
 dev = [
   "frequenz-core[dev-mkdocs,dev-flake8,dev-formatting,dev-mkdocs,dev-mypy,dev-noxfile,dev-pylint,dev-pytest]",