diff --git a/CHANGES.rst b/CHANGES.rst
index 1dd57b034..afd5f16ae 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -21,8 +21,10 @@ 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_55:
+
+Version 5.5 --- 2021-02-28
+--------------------------
 
 - ``coverage combine`` has a new option, ``--keep`` to keep the original data
   files after combining them.  The default is still to delete the files after
diff --git a/coverage/version.py b/coverage/version.py
index eb4e36b1b..d141a11da 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, 5, 0, "alpha", 0)
+version_info = (5, 5, 0, "final", 0)
 
 
 def _make_version(major, minor, micro, releaselevel, serial):
diff --git a/doc/conf.py b/doc/conf.py
index b76c0a235..770396bcf 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -66,11 +66,11 @@
 # built documents.
 #
 # The short X.Y version.
-version = "5.4"                                 # CHANGEME
+version = "5.5"                                 # CHANGEME
 # The full version, including alpha/beta/rc tags.
-release = "5.4"                                 # CHANGEME
+release = "5.5"                                 # CHANGEME
 # The date of release, in "monthname day, year" format.
-release_date = "January 24, 2021"               # CHANGEME
+release_date = "February 28, 2021"              # CHANGEME
 
 rst_epilog = """
 .. |release_date| replace:: {release_date}
diff --git a/doc/index.rst b/doc/index.rst
index 6f408b897..63ac1d9c3 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -23,7 +23,7 @@ supported on:
 .. ifconfig:: prerelease
 
     **This is a pre-release build.  The usual warnings about possible bugs
-    apply.** The latest stable version is coverage.py 5.4, `described here`_.
+    apply.** The latest stable version is coverage.py 5.5, `described here`_.
 
 .. _described here: http://coverage.readthedocs.io/