diff --git a/CHANGES.md b/CHANGES.md
index bdeb614b9e..206859cff7 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,12 @@
+Synapse 1.33.0 (2021-05-05)
+===========================
+
+Features
+--------
+
+- Build Debian packages for Ubuntu 21.04 (Hirsute Hippo). ([\#9909](https://github.com/matrix-org/synapse/issues/9909))
+
+
 Synapse 1.33.0rc2 (2021-04-29)
 ==============================
 
diff --git a/changelog.d/9909.feature b/changelog.d/9909.feature
deleted file mode 100644
index 41aba5cca6..0000000000
--- a/changelog.d/9909.feature
+++ /dev/null
@@ -1 +0,0 @@
-Build Debian packages for Ubuntu 21.04 (Hirsute Hippo).
diff --git a/debian/changelog b/debian/changelog
index fd33bfda5c..b54d3f2bc6 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.33.0) stable; urgency=medium
+
+  * New synapse release 1.33.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Wed, 05 May 2021 14:15:27 +0100
+
 matrix-synapse-py3 (1.32.2) stable; urgency=medium
 
   * New synapse release 1.32.2.
diff --git a/synapse/__init__.py b/synapse/__init__.py
index 319c52be2c..5eac40730a 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -47,7 +47,7 @@ try:
 except ImportError:
     pass
 
-__version__ = "1.33.0rc2"
+__version__ = "1.33.0"
 
 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