diff --git a/google/cloud/sql/connector/version.py b/google/cloud/sql/connector/version.py
index 2e4b4b2eb..db8162460 100644
--- a/google/cloud/sql/connector/version.py
+++ b/google/cloud/sql/connector/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.2.4"
+__version__ = "1.2.5-dev"