diff --git a/src/cleveragents/lsp/transport.py b/src/cleveragents/lsp/transport.py
index 9f21bc440..3a59e3940 100644
--- a/src/cleveragents/lsp/transport.py
+++ b/src/cleveragents/lsp/transport.py
@@ -55,7 +55,6 @@ _DISALLOWED_ENV_VARS = {
     "PATH",
     "PATHEXT",
     "PYTHONHOME",
-    "PYTHONPATH",
     "PYTHONSTARTUP",
     "PYTHONBREAKPOINT",
     "PYTHONUSERBASE",