diff --git a/changelog.d/12320.misc b/changelog.d/12320.misc
deleted file mode 100644
index 7b4748d230..0000000000
--- a/changelog.d/12320.misc
+++ /dev/null
@@ -1 +0,0 @@
-Bump the version of `black` for compatibility with the latest `click` release.
diff --git a/changelog.d/12379.misc b/changelog.d/12379.misc
new file mode 100644
index 0000000000..b55778577d
--- /dev/null
+++ b/changelog.d/12379.misc
@@ -0,0 +1 @@
+Remove temporary pin of signedjson<=1.1.1 that was added in Synapse 1.56.0.
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index d02cca0bbb..8419ab3aca 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -48,7 +48,7 @@ REQUIREMENTS = [
     "unpaddedbase64>=1.1.0",
     "canonicaljson>=1.4.0",
     # we use the type definitions added in signedjson 1.1.
-    "signedjson>=1.1.0,<=1.1.1",
+    "signedjson>=1.1.0",
     "pynacl>=1.2.1",
     "idna>=2.5",
     # validating SSL certs for IP addresses requires service_identity 18.1.