diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f406c9..5aafad5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+# [v0.3.1](https://github.com/Deuchnord/kosmorro/compare/v0.3.0...v0.3.1) (2019-12-01)
+
+
+### Bug Fixes
+
+* **moonphase:** fix the Moon phase prediction ([d715746](https://github.com/Deuchnord/kosmorro/commit/d7157466d90c7596a35dce63088b6aacb7c33c3c))
+
+
+
 # [v0.3.0](https://github.com/Deuchnord/kosmorro/compare/v0.2.3...v0.3.0) (2019-12-01)
 
 
diff --git a/kosmorrolib/version.py b/kosmorrolib/version.py
index 7574c6e..12753e8 100644
--- a/kosmorrolib/version.py
+++ b/kosmorrolib/version.py
@@ -16,4 +16,4 @@
 #    You should have received a copy of the GNU Affero General Public License
 #    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-VERSION = '0.3.0'
+VERSION = '0.3.1'