diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1836b7f4f..c0f5ef4b7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.13.1 / 2015-04-09
+* [BUGFIX] Treat memory series with zero chunks correctly in series maintenance.
+* [ENHANCEMENT] Improve readability of usage text even more.
+
 ## 0.13.0 / 2015-04-08
 * [ENHANCEMENT] Double-delta encoding for chunks, saving typically 40% of
   space, both in RAM and on disk.
diff --git a/VERSION b/VERSION
index 54d1a4f2a..c317a9189 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.13.0
+0.13.1