1 files changed, 1 insertions, 6 deletions
diff --git a/synapse/util/caches/__init__.py b/synapse/util/caches/__init__.py
index 4b8a0c7a8f..dd356bf156 100644
--- a/synapse/util/caches/__init__.py
+++ b/synapse/util/caches/__init__.py
@@ -15,11 +15,9 @@
 # limitations under the License.
 
 import logging
+from sys import intern
 from typing import Callable, Dict, Optional
 
-import six
-from six.moves import intern
-
 import attr
 from prometheus_client.core import Gauge
 
@@ -154,9 +152,6 @@ def intern_string(string):
         return None
 
     try:
-        if six.PY2:
-            string = string.encode("ascii")
-
         return intern(string)
     except UnicodeEncodeError:
         return string