diff --git a/CHANGES.md b/CHANGES.md
index 06396c3f6..2bb2336a2 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,12 @@
+Synapse 1.55.0 (2022-03-22)
+===========================
+
+Internal Changes
+----------------
+
+- Tweak copy for default sso account details template to better adhere to mobile app store guidelines. ([\#12265](https://github.com/matrix-org/synapse/issues/12265), [\#12260](https://github.com/matrix-org/synapse/issues/12260))
+
+
 Synapse 1.55.0rc1 (2022-03-15)
 ==============================
 
diff --git a/changelog.d/12260.misc b/changelog.d/12260.misc
deleted file mode 100644
index deacf034d..000000000
--- a/changelog.d/12260.misc
+++ /dev/null
@@ -1 +0,0 @@
-Reword 'Choose your user name' as 'Choose your account name' in the SSO registration template, in order to comply with SIWA guidelines.
\ No newline at end of file
diff --git a/changelog.d/12265.misc b/changelog.d/12265.misc
deleted file mode 100644
index 4213f5855..000000000
--- a/changelog.d/12265.misc
+++ /dev/null
@@ -1 +0,0 @@
-Tweak copy for default sso account details template to better adhere to mobile app store guidelines.
\ No newline at end of file
diff --git a/debian/changelog b/debian/changelog
index 09ef24ebb..7eed6c5b4 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.55.0) stable; urgency=medium
+
+  * New synapse release 1.55.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 22 Mar 2022 13:59:26 +0000
+
 matrix-synapse-py3 (1.55.0~rc1) stable; urgency=medium
 
   * New synapse release 1.55.0~rc1.
diff --git a/synapse/__init__.py b/synapse/__init__.py
index 870707f47..f0f224d0b 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -68,7 +68,7 @@ try:
 except ImportError:
     pass
 
-__version__ = "1.55.0rc1"
+__version__ = "1.55.0"
 
 if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)):
     # We import here so that we don't have to install a bunch of deps when