diff --git a/cace/__version__.py b/cace/__version__.py
index d945a22..333da61 100644
--- a/cace/__version__.py
+++ b/cace/__version__.py
@@ -11,7 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-__version__ = '2.5.5'
+__version__ = '2.5.6'
 
 if __name__ == '__main__':
     print(__version__, end='')