diff --git a/HISTORY.rst b/HISTORY.rst
index 75db9c0b..d5281a6a 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -2,6 +2,11 @@
 History
 =======
 
+1.10.3-dev (master)
+-------------------
+
+* Current unstable version
+
 1.10.2 (2021-01-12)
 -------------------
 
diff --git a/appveyor.yml b/appveyor.yml
index 119279b2..3df68199 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 1.10.2+{build}
+version: 1.10.3-dev+{build}
 image:
   - Visual Studio 2019
   - Ubuntu
diff --git a/safety/__init__.py b/safety/__init__.py
index 41a4a969..a462aafb 100644
--- a/safety/__init__.py
+++ b/safety/__init__.py
@@ -2,4 +2,4 @@
 
 __author__ = """pyup.io"""
 __email__ = 'support@pyup.io'
-__version__ = '1.10.2'
+__version__ = '1.10.3-dev'
diff --git a/setup.py b/setup.py
index e7057b60..74a62a16 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@
 
 setup(
     name='safety',
-    version='1.10.2',
+    version='1.10.3-dev',
     description="Checks installed dependencies for known vulnerabilities.",
     long_description=readme + '\n\n' + history,
     long_description_content_type="text/markdown",