diff --git a/graphene/types/argument.py b/graphene/types/argument.py
index ead2c005..043cad2b 100644
--- a/graphene/types/argument.py
+++ b/graphene/types/argument.py
@@ -36,6 +36,10 @@ def to_arguments(args, extra_args):
     for default_name, arg in iter_arguments:
         if isinstance(arg, Dynamic):
             arg = arg.get_type()
+            if arg is None:
+                # If the Dynamic type returned None
+                # then we skip the Argument
+                continue
 
         if isinstance(arg, UnmountedType):
             arg = arg.Argument()
diff --git a/graphene/types/tests/test_mutation.py b/graphene/types/tests/test_mutation.py
index 24096161..8ff8773f 100644
--- a/graphene/types/tests/test_mutation.py
+++ b/graphene/types/tests/test_mutation.py
@@ -49,6 +49,7 @@ def test_mutation_execution():
         class Input:
             name = String()
             dynamic = Dynamic(lambda: String())
+            dynamic_none = Dynamic(lambda: None)
 
         name = String()
         dynamic = Dynamic(lambda: String())