diff --git a/blockkit/elements.py b/blockkit/elements.py
index 01b3283..d3617c8 100644
--- a/blockkit/elements.py
+++ b/blockkit/elements.py
@@ -23,7 +23,6 @@
     validate_datetime,
     validate_text_length,
     validate_time,
-    validate_integer_size,
     validator,
 )