diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index ecca5b768..4fe795ec3 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 1.5.0
+current_version = 1.5.1-dev
 commit = True
 tag = False
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\-(?P<release>[a-z]+))?
diff --git a/dymos/__init__.py b/dymos/__init__.py
index 76c611e42..727d7d23b 100644
--- a/dymos/__init__.py
+++ b/dymos/__init__.py
@@ -1,4 +1,4 @@
-__version__ = '1.5.0'
+__version__ = '1.5.1-dev'
 
 from .phase import Phase
 from .transcriptions import GaussLobatto, Radau, ExplicitShooting
diff --git a/setup.py b/setup.py
index ca60028a2..9fb37befb 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@
 
 
 setup(name='dymos',
-    version='1.5.0',
+    version='1.5.1-dev',
     description='Open-Source Optimization of Dynamic Multidisciplinary Systems',
     long_description='''
 Dymos is a framework for the simulation and optimization of dynamical systems within the OpenMDAO Multidisciplinary Analysis and Optimization environment.