diff --git a/CHANGES.rst b/CHANGES.rst
index cec94246f..cd34eab80 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -21,8 +21,11 @@ want to know what's different in 5.0 since 4.5.x, see :ref:`whatsnew5x`.
     ..  Version 9.8.1 --- 2027-07-27
     ..  ----------------------------
 
-Unreleased
-----------
+
+.. _changes_51:
+
+Version 5.1 --- 2020-04-12
+--------------------------
 
 - The JSON report now includes counts of covered and missing branches. Thanks,
   Salvatore Zagaria.
diff --git a/coverage/version.py b/coverage/version.py
index 8186d34c9..8e72165d3 100644
--- a/coverage/version.py
+++ b/coverage/version.py
@@ -5,7 +5,7 @@
 # This file is exec'ed in setup.py, don't import anything!
 
 # Same semantics as sys.version_info.
-version_info = (5, 0, 5, 'alpha', 0)
+version_info = (5, 1, 0, 'final', 0)
 
 
 def _make_version(major, minor, micro, releaselevel, serial):
diff --git a/doc/conf.py b/doc/conf.py
index 67e09307c..ab18f3a80 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -66,11 +66,11 @@
 # built documents.
 #
 # The short X.Y version.
-version = '5.0'                                 # CHANGEME
+version = '5.1'                                 # CHANGEME
 # The full version, including alpha/beta/rc tags.
-release = '5.0.4'                               # CHANGEME
+release = '5.1'                                 # CHANGEME
 # The date of release, in "monthname day, year" format.
-release_date = 'March 16, 2020'                 # CHANGEME
+release_date = 'April 12, 2020'                 # CHANGEME
 
 rst_epilog = """
 .. |release_date| replace:: {release_date}