diff --git a/CHANGELOG.md b/CHANGELOG.md
index bd18a030cee1584044fa1d3c80ada218a735af63..2b2a1cf9f0176b627f205e4a3bbcd0bae0cab2ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,19 @@
+# v0.13.3 (2019-12-23)
+
+This release contains more major performance improvements for Spack
+environments, as well as bugfixes for mirrors and a `python` issue with
+RHEL8.
+
+* mirror bugfixes: symlinks, duplicate patches, and exception handling (#13789)
+* don't try to fetch `BundlePackages` (#13908)
+* avoid re-fetching patches already added to a mirror (#13908)
+* avoid re-fetching alread added patches (#13908)
+* avoid re-fetching alread added patches (#13908)
+* allow repeated invocations of `spack mirror create` on the same dir (#13908)
+* bugfix for RHEL8 when `python` is unavailable (#14252)
+* improve concretization performance in environments (#14190)
+* improve installation performance in environments (#14263)
+
 # v0.13.2 (2019-12-04)
 
 This release contains major performance improvements for Spack environments, as
diff --git a/lib/spack/spack/__init__.py b/lib/spack/spack/__init__.py
index f7caf373e3fd94db01706a08995bccc7990c7be5..007440966131af8bbcfe69ba893c2c92c50eb55d 100644
--- a/lib/spack/spack/__init__.py
+++ b/lib/spack/spack/__init__.py
@@ -5,7 +5,7 @@
 
 
 #: major, minor, patch version for Spack, in a tuple
-spack_version_info = (0, 13, 2)
+spack_version_info = (0, 13, 3)
 
 #: String containing Spack version joined with .'s
 spack_version = '.'.join(str(v) for v in spack_version_info)