diff --git a/tools/manage_clvm.py b/tools/manage_clvm.py
index a9d5a6c91e..3a6a8f7bdd 100644
--- a/tools/manage_clvm.py
+++ b/tools/manage_clvm.py
@@ -13,6 +13,8 @@ import typing
 import click
 import typing_extensions
 
+from chia.types.blockchain_format.sized_bytes import bytes32
+
 here = pathlib.Path(__file__).parent.resolve()
 root = here.parent
 cache_path = root.joinpath(".chia_cache", "manage_clvm.json")
@@ -99,7 +101,7 @@ def dump_cache(cache: Cache, file: typing.IO[str]) -> None:
     json.dump(cache, file, indent=4)
 
 
-def generate_hash_bytes(hex_bytes: bytes) -> bytes:
+def generate_hash_bytes(hex_bytes: bytes) -> bytes32:
     cleaned_blob = bytes.fromhex(hex_bytes.decode("utf-8"))
     serialize_program = SerializedProgram.from_bytes(cleaned_blob)
     return serialize_program.get_tree_hash()
@@ -141,7 +143,7 @@ class ClvmBytes:
         hex_bytes = paths.hex.read_bytes()
         return cls(
             hex=hex_bytes,
-            hash=bytes.fromhex(hash_dict[paths.hash])
+            hash=bytes32(bytes.fromhex(hash_dict[paths.hash]))
             if paths.hash in hash_dict
             else generate_hash_bytes(hex_bytes=hex_bytes),
         )