diff --git a/CHANGES.rst b/CHANGES.rst
index 1bda25ae0..88b843dee 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,7 +2,7 @@
 Changelog (Pillow)
 ==================
 
-5.1.0 (unreleased)
+5.1.0 (2018-04-02)
 ------------------
 
 - Close fp before return in ImagingSavePPM #3061
diff --git a/src/PIL/version.py b/src/PIL/version.py
index fbf87ab58..4f3f70309 100644
--- a/src/PIL/version.py
+++ b/src/PIL/version.py
@@ -1,2 +1,2 @@
 # Master version for Pillow
-__version__ = '5.1.0.dev0'
+__version__ = '5.1.0'