diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index f517963a9..3facb2ac1 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -3,10 +3,8 @@ Changelog
 
 .. _v3-1:
 
-3.1 - `master`_
-~~~~~~~~~~~~~~~
-
-.. note:: This version is not yet released and is under active development.
+3.1 - 2020-08-26
+~~~~~~~~~~~~~~~~
 
 * **BACKWARDS INCOMPATIBLE:** Removed support for ``idna`` based
   :term:`U-label` parsing in various X.509 classes. This support was originally
diff --git a/src/cryptography/__about__.py b/src/cryptography/__about__.py
index 1b3cd70ac..fd1b7a581 100644
--- a/src/cryptography/__about__.py
+++ b/src/cryptography/__about__.py
@@ -22,7 +22,7 @@ __summary__ = (
 )
 __uri__ = "https://github.com/pyca/cryptography"
 
-__version__ = "3.1.dev1"
+__version__ = "3.1"
 
 __author__ = "The cryptography developers"
 __email__ = "cryptography-dev@python.org"
diff --git a/vectors/cryptography_vectors/__about__.py b/vectors/cryptography_vectors/__about__.py
index 86ac18f18..0ae2179b0 100644
--- a/vectors/cryptography_vectors/__about__.py
+++ b/vectors/cryptography_vectors/__about__.py
@@ -20,7 +20,7 @@ __summary__ = "Test vectors for the cryptography package."
 
 __uri__ = "https://github.com/pyca/cryptography"
 
-__version__ = "3.1.dev1"
+__version__ = "3.1"
 
 __author__ = "The cryptography developers"
 __email__ = "cryptography-dev@python.org"