diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4b9fc9b..fc25a26 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 0.4 (unreleased)
+## 0.4 (May 19, 2016)
 
 Features:
 
diff --git a/Makefile b/Makefile
index 6104571..f5b488d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-VERSION=0.3
+VERSION=0.4
 
 CPPFLAGS=-DVERSION=\"${VERSION}\" -D_GNU_SOURCE
 CFLAGS+=-Wall -Wextra -g -std=c99 -O3 -pedantic