diff --git a/CHANGES.rst b/CHANGES.rst
index 0311920..1b67455 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,7 @@
+v0.14.0
+=======
+- Update AnyODE to new upstream version.
+
 v0.13.1
 =======
 - Allow CFLAGS/LDFLAGS to be passed to cvode backend through PYODESYS_CVODE_{FLAGS,LDFLAGS}
diff --git a/scripts/release.sh b/scripts/release.sh
index 6035598..a668fe4 100755
--- a/scripts/release.sh
+++ b/scripts/release.sh
@@ -20,7 +20,7 @@ PKG=$(find . -maxdepth 2 -name __init__.py -print0 | xargs -0 -n1 dirname | xarg
 ! grep --include "*.py" "will_be_missing_in='$VERSION'" -R $PKG/  # see deprecation()
 PKG_UPPER=$(echo $PKG | tr '[:lower:]' '[:upper:]')
 MPLBACKEND=Agg ./scripts/run_tests.sh
-env ${PKG_UPPER}_RELEASE_VERSION=v$VERSION python setup.py sdist
+env ${PKG_UPPER}_RELEASE_VERSION=v$VERSION ${PYTHON:-python3} setup.py sdist
 env ${PKG_UPPER}_RELEASE_VERSION=v$VERSION ./scripts/generate_docs.sh
 
 # All went well, add a tag and push it.