diff --git a/pyproject.toml b/pyproject.toml
index 20939655..1c5e7bf7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ pyxdg = ">=0.27.0"
 rich = "^12.2.0"
 
 # dayone-only deps
-tzlocal = ">=4.0, <5.0"   # https://github.com/regebro/tzlocal/blob/master/CHANGES.txt
+tzlocal = ">=4.0"   # https://github.com/regebro/tzlocal/blob/master/CHANGES.txt
 
 [tool.poetry.dev-dependencies]
 black = { version = ">=21.5b2", allow-prereleases = true }