diff --git a/src/braket/_schemas/_version.py b/src/braket/_schemas/_version.py
index 78706aa..6b31c6b 100644
--- a/src/braket/_schemas/_version.py
+++ b/src/braket/_schemas/_version.py
@@ -15,4 +15,4 @@
    Version number (major.minor.patch[-label])
 """
 
-__version__ = "1.21.3"
+__version__ = "1.21.4.dev0"