diff --git a/pyproject.toml b/pyproject.toml
index db682fb..fc94c5e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "slackblocks"
-version = "1.0.11"
+version = "1.0.12"
 description = "Python wrapper for the Slack Blocks API"
 authors = [
     "Nicholas Lambourne <dev@ndl.im>",
diff --git a/slackblocks/blocks.py b/slackblocks/blocks.py
index c60ab6f..b653ba9 100644
--- a/slackblocks/blocks.py
+++ b/slackblocks/blocks.py
@@ -32,6 +32,7 @@
     UserSelectMenu,
     NumberInput,
     EmailInput,
+    URLInput,
 )
 from slackblocks.errors import InvalidUsageError
 from slackblocks.objects import (
@@ -69,6 +70,7 @@
     UserMultiSelectMenu,
     RichTextInput,
     EmailInput,
+    URLInput,
 )
 
 
@@ -335,7 +337,9 @@ def __init__(
             label, force_plaintext=True, max_length=2000, allow_none=False
         )
         if not isinstance(element, ALLOWED_INPUT_ELEMENTS):
-            raise InvalidUsageError("")
+            raise InvalidUsageError(
+                f"InputBlocks can only hold elements of type: {ALLOWED_INPUT_ELEMENTS}"
+            )
         self.element = element
         self.dispatch_action = dispatch_action
         self.hint = Text.to_text(