diff --git a/hvcc/core/hv2ir/types/IR.py b/hvcc/core/hv2ir/types/IR.py
index 06169a5..321b7b6 100644
--- a/hvcc/core/hv2ir/types/IR.py
+++ b/hvcc/core/hv2ir/types/IR.py
@@ -44,7 +44,10 @@ class HeavyIRType(RootModel):
 
 if __name__ == "__main__":
     import json
-    with open('../../json/heavy.ir.json') as f:
+    import importlib_resources
+
+    heavy_ir_json = importlib_resources.files('hvcc') / 'core/json/heavy.ir.json'
+    with open(heavy_ir_json, "r") as f:
         data = json.load(f)
         heavy_ir = HeavyIRType(root=data)
         print(heavy_ir.root.keys())
diff --git a/hvcc/core/hv2ir/types/Lang.py b/hvcc/core/hv2ir/types/Lang.py
index 2dd9c29..1e4d92e 100644
--- a/hvcc/core/hv2ir/types/Lang.py
+++ b/hvcc/core/hv2ir/types/Lang.py
@@ -40,7 +40,10 @@ class HeavyLangType(RootModel):
 
 if __name__ == "__main__":
     import json
-    with open('../../json/heavy.lang.json') as f:
+    import importlib_resources
+
+    heavy_lang_json = importlib_resources.files('hvcc') / 'core/json/heavy.lang.json'
+    with open(heavy_lang_json, "r") as f:
         data = json.load(f)
         heavy_lang = HeavyLangType(root=data)
         print(heavy_lang.root.keys())