diff --git a/ChangeLog b/ChangeLog
index d4b752c9b6..4df08d88b3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+Version 8.4.0
+-------------
+
+   * `--include` and `--exclude` can now take a comma-separated list. These are essentially
+     ANDed together (unlike passing the flag multiple times which ORs them).
+   * `plz run parallel` limits the number of subprocesses run simultaneously.
+
+
 Version 8.3.1
 -------------
 
diff --git a/VERSION b/VERSION
index 56b6be4ebb..a2f28f43be 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-8.3.1
+8.4.0