1 files changed, 3 insertions, 3 deletions
diff --git a/synapse/util/frozenutils.py b/synapse/util/frozenutils.py
index 15f0a7ba9e..581c6052ac 100644
--- a/synapse/util/frozenutils.py
+++ b/synapse/util/frozenutils.py
@@ -13,11 +13,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from frozendict import frozendict
-import simplejson as json
-
 from six import string_types
 
+from canonicaljson import json
+from frozendict import frozendict
+
 
 def freeze(o):
     if isinstance(o, dict):