diff --git a/lib/gruf/version.rb b/lib/gruf/version.rb
index bbe15b5..055a5dd 100644
--- a/lib/gruf/version.rb
+++ b/lib/gruf/version.rb
@@ -16,5 +16,5 @@
 # OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 module Gruf
-  VERSION = '2.18.0'
+  VERSION = '2.18.1.pre'
 end