diff --git a/changelog.d/1172.misc b/changelog.d/1172.misc
new file mode 100644
index 0000000000..30b3e56082
--- /dev/null
+++ b/changelog.d/1172.misc
@@ -0,0 +1 @@
+Update `user_filters` table to have a unique index, and non-null columns. Thanks to @pik for contributing this.
\ No newline at end of file
diff --git a/changelog.d/2142.feature b/changelog.d/2142.feature
new file mode 100644
index 0000000000..e21e8325e1
--- /dev/null
+++ b/changelog.d/2142.feature
@@ -0,0 +1 @@
+Improve quality of thumbnails for 1-bit/8-bit color palette images.
diff --git a/changelog.d/6019.misc b/changelog.d/6019.misc
new file mode 100644
index 0000000000..dfee73c28f
--- /dev/null
+++ b/changelog.d/6019.misc
@@ -0,0 +1 @@
+Improve performance of the public room list directory.
diff --git a/changelog.d/6077.misc b/changelog.d/6077.misc
new file mode 100644
index 0000000000..31ac5b97a4
--- /dev/null
+++ b/changelog.d/6077.misc
@@ -0,0 +1 @@
+Edit header dicts docstrings in SimpleHttpClient to note that `str` or `bytes` can be passed as header keys.
diff --git a/changelog.d/6109.bugfix b/changelog.d/6109.bugfix
new file mode 100644
index 0000000000..da7ac1be4e
--- /dev/null
+++ b/changelog.d/6109.bugfix
@@ -0,0 +1 @@
+Fix bug when uploading a large file: Synapse responds with `M_UNKNOWN` while it should be `M_TOO_LARGE` according to spec. Contributed by Anshul Angaria.
diff --git a/changelog.d/6115.misc b/changelog.d/6115.misc
new file mode 100644
index 0000000000..b19e395a99
--- /dev/null
+++ b/changelog.d/6115.misc
@@ -0,0 +1 @@
+Drop some unused database tables.
diff --git a/changelog.d/6125.feature b/changelog.d/6125.feature
new file mode 100644
index 0000000000..cbe5f8d3c8
--- /dev/null
+++ b/changelog.d/6125.feature
@@ -0,0 +1 @@
+Reject all pending invites for a user during deactivation.
diff --git a/changelog.d/6139.misc b/changelog.d/6139.misc
new file mode 100644
index 0000000000..d4b65e7af8
--- /dev/null
+++ b/changelog.d/6139.misc
@@ -0,0 +1 @@
+Log responder when responding to media request.
diff --git a/changelog.d/6144.bugfix b/changelog.d/6144.bugfix
new file mode 100644
index 0000000000..eee63961e4
--- /dev/null
+++ b/changelog.d/6144.bugfix
@@ -0,0 +1 @@
+Prevent user push rules being deleted from a room when it is upgraded.
\ No newline at end of file
diff --git a/changelog.d/6147.bugfix b/changelog.d/6147.bugfix
new file mode 100644
index 0000000000..b0f936d280
--- /dev/null
+++ b/changelog.d/6147.bugfix
@@ -0,0 +1 @@
+Don't 500 when trying to exchange a revoked 3PID invite.
diff --git a/changelog.d/6148.misc b/changelog.d/6148.misc
new file mode 100644
index 0000000000..1d5213345c
--- /dev/null
+++ b/changelog.d/6148.misc
@@ -0,0 +1 @@
+Improve performance of `find_next_generated_user_id` DB query.
diff --git a/changelog.d/6150.misc b/changelog.d/6150.misc
new file mode 100644
index 0000000000..a373c091ab
--- /dev/null
+++ b/changelog.d/6150.misc
@@ -0,0 +1 @@
+Expand type-checking on modules imported by synapse.config.
diff --git a/changelog.d/6152.misc b/changelog.d/6152.misc
new file mode 100644
index 0000000000..dfee73c28f
--- /dev/null
+++ b/changelog.d/6152.misc
@@ -0,0 +1 @@
+Improve performance of the public room list directory.
diff --git a/changelog.d/6153.misc b/changelog.d/6153.misc
new file mode 100644
index 0000000000..dfee73c28f
--- /dev/null
+++ b/changelog.d/6153.misc
@@ -0,0 +1 @@
+Improve performance of the public room list directory.
diff --git a/changelog.d/6154.misc b/changelog.d/6154.misc
new file mode 100644
index 0000000000..dfee73c28f
--- /dev/null
+++ b/changelog.d/6154.misc
@@ -0,0 +1 @@
+Improve performance of the public room list directory.
diff --git a/changelog.d/6159.misc b/changelog.d/6159.misc
new file mode 100644
index 0000000000..06cc163f8b
--- /dev/null
+++ b/changelog.d/6159.misc
@@ -0,0 +1 @@
+Add more caching to `_get_joined_users_from_context` DB query.
diff --git a/changelog.d/6160.misc b/changelog.d/6160.misc
new file mode 100644
index 0000000000..3d7cce00e1
--- /dev/null
+++ b/changelog.d/6160.misc
@@ -0,0 +1 @@
+Add some metrics on the federation sender.
diff --git a/changelog.d/6161.bugfix b/changelog.d/6161.bugfix
new file mode 100644
index 0000000000..a0e2adb979
--- /dev/null
+++ b/changelog.d/6161.bugfix
@@ -0,0 +1 @@
+Fix bug where guest account registration can wedge after restart.
diff --git a/changelog.d/6167.misc b/changelog.d/6167.misc
new file mode 100644
index 0000000000..32c96b3681
--- /dev/null
+++ b/changelog.d/6167.misc
@@ -0,0 +1 @@
+Add some logging to the rooms stats updates, to try to track down a flaky test.
diff --git a/changelog.d/6170.bugfix b/changelog.d/6170.bugfix
new file mode 100644
index 0000000000..52f7ea233c
--- /dev/null
+++ b/changelog.d/6170.bugfix
@@ -0,0 +1 @@
+Fix /federation/v1/state endpoint for recent room versions.
diff --git a/changelog.d/6175.misc b/changelog.d/6175.misc
new file mode 100644
index 0000000000..30b3e56082
--- /dev/null
+++ b/changelog.d/6175.misc
@@ -0,0 +1 @@
+Update `user_filters` table to have a unique index, and non-null columns. Thanks to @pik for contributing this.
\ No newline at end of file
diff --git a/changelog.d/6178.bugfix b/changelog.d/6178.bugfix
new file mode 100644
index 0000000000..cd288c2a44
--- /dev/null
+++ b/changelog.d/6178.bugfix
@@ -0,0 +1 @@
+Make the `synapse_port_db` script create the right indexes on a new PostgreSQL database.
diff --git a/changelog.d/6179.misc b/changelog.d/6179.misc
new file mode 100644
index 0000000000..01c4e71ea3
--- /dev/null
+++ b/changelog.d/6179.misc
@@ -0,0 +1 @@
+Remove unused `timeout` parameter from `_get_public_room_list`.
\ No newline at end of file
diff --git a/changelog.d/6185.bugfix b/changelog.d/6185.bugfix
new file mode 100644
index 0000000000..9d1c669b88
--- /dev/null
+++ b/changelog.d/6185.bugfix
@@ -0,0 +1 @@
+Fix bug where redacted events were sometimes incorrectly censored in the database, breaking APIs that attempted to fetch such events.
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