diff --git a/src/debugpy/common/json.py b/src/debugpy/common/json.py
index 3502b09f..7e1b317b 100644
--- a/src/debugpy/common/json.py
+++ b/src/debugpy/common/json.py
@@ -7,9 +7,8 @@
 
 import builtins
 import json
-import operator
-import string
 import numbers
+import operator
 
 
 JsonDecoder = json.JSONDecoder
@@ -108,16 +107,14 @@ def of_type(*classinfo, **kwargs):
     def validate(value):
         if (optional and value == ()) or isinstance(value, classinfo):
             return value
-        elif (
-            isinstance(value, str)
-            and all(x in string.digits + "." for x in value)
-            and any(issubclass(x, numbers.Number) for x in classinfo)
-        ):
-            try:
-                return int(value)
-            except ValueError:
-                return float(value)
         else:
+            for one_info in classinfo:
+                if issubclass(one_info, numbers.Number):
+                    try:
+                        return one_info(value)
+                    except ValueError:
+                        pass
+
             if not optional and value == ():
                 raise ValueError("must be specified")
             raise TypeError("must be " + " or ".join(t.__name__ for t in classinfo))