diff --git a/pyproject.toml b/pyproject.toml
index 40b0f38..3294dee 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ description = "CLI to convert yaml into ics."
 
 dependencies = [
     "ics-vtimezones == 2020.2",
-    "ics == 0.8.0.dev0",
+    "ics == 0.8.0.dev1",
     "python-dateutil >= 2.8",
     "pyyaml >= 6",
     "importlib-resources >= 5.2.1",
@@ -33,7 +33,7 @@ dependencies = [
 
 [project.optional-dependencies]
 test = ["pytest >= 8.0", "pytest-cov >= 5.0"]
-lint = ["pre-commit == 4.6.0"]
+lint = ["pre-commit == 4.6.1"]
 dev = ["changelist == 0.5"]
 
 [project.scripts]