diff --git a/CHANGELOG.md b/CHANGELOG.md
index 81e2adc..e8b18be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 0.3.1 / 2015-03-04
+* [ENHANCEMENT] Switched fingerprinting functions from own free list to
+  sync.Pool.
+* [CHANGE] Makefile uses Go 1.4.2 now (only relevant for examples and tests).
+
 ## 0.3.0 / 2015-03-03
 * [CHANGE] Changed the fingerprinting for metrics. THIS WILL INVALIDATE ALL
   PERSISTED FINGERPRINTS. IF YOU COMPILE THE PROMETHEUS SERVER WITH THIS
diff --git a/VERSION b/VERSION
index 0d91a54..9e11b32 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.3.0
+0.3.1