diff --git a/src/braket/default_simulator/_version.py b/src/braket/default_simulator/_version.py
index 1fe5795f..ef77d69d 100644
--- a/src/braket/default_simulator/_version.py
+++ b/src/braket/default_simulator/_version.py
@@ -15,4 +15,4 @@
    Version number (major.minor.patch[-label])
 """
 
-__version__ = "1.21.6"
+__version__ = "1.21.7.dev0"