diff --git a/pyproject.toml b/pyproject.toml
index 523b3a21..4c43b133 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,30 +43,30 @@ dev-flake8 = [
   "pydoclint == 0.5.9",
   "pydocstyle == 6.3.0",
 ]
-dev-formatting = ["black == 24.8.0", "isort == 5.13.2"]
+dev-formatting = ["black == 24.10.0", "isort == 5.13.2"]
 dev-mkdocs = [
   "Markdown == 3.7",
-  "black == 24.8.0",
+  "black == 24.10.0",
   "frequenz-repo-config[lib] == 0.10.0",
   "markdown-callouts == 0.4.0",
   "markdown-svgbob == 202406.1023",
   "mike == 2.1.3",
   "mkdocs-gen-files == 0.5.0",
-  "mkdocs-include-markdown-plugin == 7.0.0",
+  "mkdocs-include-markdown-plugin == 7.0.1",
   "mkdocs-literate-nav == 0.6.1",
-  "mkdocs-macros-plugin == 1.2.0",
-  "mkdocs-material == 9.5.39",
-  "mkdocstrings[python] == 0.26.1",
-  "mkdocstrings-python == 1.11.1",
+  "mkdocs-macros-plugin == 1.3.7",
+  "mkdocs-material == 9.5.44",
+  "mkdocstrings[python] == 0.27.0",
+  "mkdocstrings-python == 1.12.2",
   "pymdownx-superfence-filter-lines == 0.1.0",
 ]
 dev-mypy = [
   # For checking the noxfile, docs/ script, and tests
   "frequenz-channels[dev-mkdocs,dev-noxfile,dev-pytest]",
-  "mypy == 1.11.2",
+  "mypy == 1.13.0",
   "types-Markdown == 3.7.0.20240822",
 ]
-dev-noxfile = ["nox == 2024.4.15", "frequenz-repo-config[lib] == 0.10.0"]
+dev-noxfile = ["nox == 2024.10.9", "frequenz-repo-config[lib] == 0.10.0"]
 dev-pylint = [
   # For checking the noxfile, docs/ script, and tests
   "frequenz-channels[dev-mkdocs,dev-noxfile,dev-pytest]",
@@ -75,7 +75,7 @@ dev-pylint = [
 dev-pytest = [
   "async-solipsism == 0.7",
   "frequenz-repo-config[extra-lint-examples] == 0.10.0",
-  "hypothesis == 6.112.2",
+  "hypothesis == 6.119.3",
   "pytest == 8.3.3",
   "pytest-asyncio == 0.24.0",
   "pytest-mock == 3.14.0",
diff --git a/tests/test_timer.py b/tests/test_timer.py
index c3fd3014..efd856ae 100644
--- a/tests/test_timer.py
+++ b/tests/test_timer.py
@@ -31,19 +31,12 @@ def event_loop() -> Iterator[async_solipsism.EventLoop]:
     loop.close()
 
 
-_max_timedelta_microseconds = (
-    int(
-        timedelta.max.total_seconds() * 1_000_000,
-    )
-    - 1
-)
+# We give some extra room (dividing by 10) to the max and min to avoid flaky errors
+# failing when getting too close to the limits, as these are not realistic scenarios and
+# weird things can happen.
+_max_timedelta_microseconds = int(timedelta.max.total_seconds() * 1_000_000 / 10)
 
-_min_timedelta_microseconds = (
-    int(
-        timedelta.min.total_seconds() * 1_000_000,
-    )
-    + 1
-)
+_min_timedelta_microseconds = int(timedelta.min.total_seconds() * 1_000_000 / 10)
 
 _calculate_next_tick_time_args = {
     "now": st.integers(),