diff --git a/pyproject.toml b/pyproject.toml
index 219ed107..cbdd7ebd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -231,7 +231,7 @@ dependencies = [
     "jwcrypto ==1.5.6",
     "loguru ==0.7.2",
     "phonenumbers >=8.12.48,<8.14",
-    "posthog >=3.0.1,<4",
+    "posthog >=3.0.1,<6",
     "postmarker ==1.0",
     "pydantic ==2.9.2",
     "python-multipart ==0.0.17",