diff --git a/synapse/events/__init__.py b/synapse/events/__init__.py
index f8fbb18e3..1ec79a678 100644
--- a/synapse/events/__init__.py
+++ b/synapse/events/__init__.py
@@ -13,8 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from frozendict import frozendict
-
 from synapse.util.frozenutils import freeze, unfreeze
 
 import copy