diff --git a/changelog.d/10114.misc b/changelog.d/10114.misc
new file mode 100644
index 0000000000..808548f7c7
--- /dev/null
+++ b/changelog.d/10114.misc
@@ -0,0 +1 @@
+Drop Origin and Accept from the value of the Access-Control-Allow-Headers response header.
diff --git a/changelog.d/10166.doc b/changelog.d/10166.doc
new file mode 100644
index 0000000000..8d1710c132
--- /dev/null
+++ b/changelog.d/10166.doc
@@ -0,0 +1 @@
+Move the upgrade notes to [docs/upgrade.md](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md) and convert them to markdown.
diff --git a/changelog.d/10213.misc b/changelog.d/10213.misc
new file mode 100644
index 0000000000..9adb0fbd02
--- /dev/null
+++ b/changelog.d/10213.misc
@@ -0,0 +1 @@
+Add type hints to the federation servlets.
diff --git a/changelog.d/10214.feature b/changelog.d/10214.feature
new file mode 100644
index 0000000000..a3818c9d25
--- /dev/null
+++ b/changelog.d/10214.feature
@@ -0,0 +1 @@
+Omit empty fields from the `/sync` response. Contributed by @deepbluev7.
\ No newline at end of file
diff --git a/changelog.d/10223.bugfix b/changelog.d/10223.bugfix
new file mode 100644
index 0000000000..4e42f6b608
--- /dev/null
+++ b/changelog.d/10223.bugfix
@@ -0,0 +1 @@
+Fix a long-standing bug which meant that invite rejections and knocks were not sent out over federation in a timely manner.
diff --git a/changelog.d/10225.feature b/changelog.d/10225.feature
new file mode 100644
index 0000000000..d16f66ffe9
--- /dev/null
+++ b/changelog.d/10225.feature
@@ -0,0 +1 @@
+Improve validation on federation `send_{join,leave,knock}` endpoints.
diff --git a/changelog.d/10237.misc b/changelog.d/10237.misc
new file mode 100644
index 0000000000..d76c119a41
--- /dev/null
+++ b/changelog.d/10237.misc
@@ -0,0 +1 @@
+Improve the reliability of auto-joining remote rooms.
diff --git a/changelog.d/10239.misc b/changelog.d/10239.misc
new file mode 100644
index 0000000000..d05f1c4411
--- /dev/null
+++ b/changelog.d/10239.misc
@@ -0,0 +1 @@
+Update the release script to use the semver terminology and determine the release branch based on the next version.
diff --git a/changelog.d/10242.doc b/changelog.d/10242.doc
new file mode 100644
index 0000000000..2241b28547
--- /dev/null
+++ b/changelog.d/10242.doc
@@ -0,0 +1 @@
+Choose Welcome & Overview as the default page for synapse documentation website.
diff --git a/changelog.d/10243.feature b/changelog.d/10243.feature
new file mode 100644
index 0000000000..d16f66ffe9
--- /dev/null
+++ b/changelog.d/10243.feature
@@ -0,0 +1 @@
+Improve validation on federation `send_{join,leave,knock}` endpoints.
diff --git a/changelog.d/10258.doc b/changelog.d/10258.doc
new file mode 100644
index 0000000000..1549786c0c
--- /dev/null
+++ b/changelog.d/10258.doc
@@ -0,0 +1 @@
+Adjust the URL in the README.rst file to point to irc.libera.chat.
diff --git a/changelog.d/10263.feature b/changelog.d/10263.feature
new file mode 100644
index 0000000000..7b1d2fe60f
--- /dev/null
+++ b/changelog.d/10263.feature
@@ -0,0 +1 @@
+Mark events received over federation which fail a spam check as "soft-failed".
diff --git a/changelog.d/10264.bugfix b/changelog.d/10264.bugfix
new file mode 100644
index 0000000000..7ebda7cdc2
--- /dev/null
+++ b/changelog.d/10264.bugfix
@@ -0,0 +1 @@
+Fix a long-standing bug where Synapse would return errors after 2<sup>31</sup> events were handled by the server.
diff --git a/changelog.d/9450.feature b/changelog.d/9450.feature
new file mode 100644
index 0000000000..455936a41d
--- /dev/null
+++ b/changelog.d/9450.feature
@@ -0,0 +1 @@
+Implement refresh tokens as specified by [MSC2918](https://github.com/matrix-org/matrix-doc/pull/2918).
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