diff --git a/poetry.lock b/poetry.lock
index b284979c26..7979f5df51 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1785,4 +1785,4 @@ cli = ["click", "cookiecutter", "jinja2-time", "rich"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.11"
-content-hash = "b0c5ced954a5ab488221a0b12dca18dccd7969e08d8c8494f0d944f144da23a1"
+content-hash = "5ed926b27c4c717fd255e95fb975afca20416e58b40e018580e3cb6779bd69ed"
diff --git a/pyproject.toml b/pyproject.toml
index f6ce2f7d70..3bcd636bb9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,7 +51,7 @@ pyhumps = "^3.8.0"
 pydispatcher = "^2.0.7"
 tomli = "^2.0.1"
 aiostream = ">=0.5.2,<0.7.0"
-python-dateutil = "^2.9.0.post0"
+python-dateutil = "^2.9.0-post.0"
 
 # CLI
 click = { version = "^8.1.3", optional = true }