diff --git a/pyproject.toml b/pyproject.toml
index b9899ab..b8262b2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ pandas = "^1.4.3"
 pyliftover = "^0.4"
 requests = "^2.28.1"
 jq = "^1.2.2"
-polars = "^0.14.9"
+polars = "0.14.9"
 
 [tool.poetry.dev-dependencies]
 pytest = "^7.1.2"