diff --git a/changelog.d/15673.misc b/changelog.d/15673.misc
new file mode 100644
index 0000000000..52148fc63f
--- /dev/null
+++ b/changelog.d/15673.misc
@@ -0,0 +1 @@
+Add `dch` and `notify-send` to the development Nix flake so that the release script can be used.
\ No newline at end of file
diff --git a/flake.nix b/flake.nix
index 7351571e61..8c7a4f8769 100644
--- a/flake.nix
+++ b/flake.nix
@@ -100,6 +100,10 @@
 
                   # For building the Synapse documentation website.
                   mdbook
+
+                  # For releasing Synapse
+                  debian-devscripts # (`dch` for manipulating the Debian changelog)
+                  libnotify # (the release script uses `notify-send` to tell you when CI jobs are done)
                 ];
 
                 # Install Python and manage a virtualenv with Poetry.