diff --git a/patches/change_app_version.py b/patches/change_app_version.py
index 1ba1049..d3f890b 100644
--- a/patches/change_app_version.py
+++ b/patches/change_app_version.py
@@ -7,6 +7,7 @@ priority = -98
 
 # imports
 ## bundled
+import os
 from typing import TypedDict
 
 ## installed
@@ -47,4 +48,42 @@ def apply(patch_conf: PatchConfig_ChangeAppVersion) -> bool:
     ) as f:
         apktool_yaml = yaml.dump(apktool_yaml, f, indent=2, Dumper=yaml.Dumper)
 
+    for root, dirs, files in os.walk(f"{config['folders']['decompiled']}"):
+        if len(files) < 0:
+            continue
+
+        for filename in files:
+            file_path = os.path.join(root, filename)
+            if os.path.isfile(file_path) and filename.endswith(".smali"):
+                file_contents = None
+                with open(file_path, "r", encoding="utf-8") as file:
+                    file_contents = file.read()
+
+                if file_contents.find(str(patch_conf["_internal_app_build"])) >= 0 or file_contents.find(
+                    hex(patch_conf["_internal_app_build"])
+                ) >= 0:
+                    file_contents = file_contents.replace(
+                        str(patch_conf["_internal_app_build"]),
+                        str(patch_conf["version_code"]) or str(patch_conf["_internal_app_build"]),
+                    )
+                    file_contents = file_contents.replace(
+                        hex(patch_conf["_internal_app_build"]),
+                        hex(patch_conf["version_code"]) or hex(patch_conf["_internal_app_build"]),
+                    )
+                    log.debug(f"replaced build number in file: {file_path}")
+                    log.debug(f"previous: {patch_conf["_internal_app_build"]} ({hex(patch_conf['_internal_app_build'])})")
+                    log.debug(f"replaced: {patch_conf["version_code"]} ({hex(patch_conf['version_code'])})")
+
+                if file_contents.find(patch_conf["_internal_app_version"]) >= 0:
+                    file_contents = file_contents.replace(
+                        patch_conf["_internal_app_version"],
+                        patch_conf["version_name"] or patch_conf["_internal_app_version"],
+                    )
+                    log.debug(f"replaced version name in file: {file_path}")
+                    log.debug(f"previous: {patch_conf["_internal_app_build"]}")
+                    log.debug(f"replaced: {patch_conf["version_code"]}")
+
+                with open(file_path, "w", encoding="utf-8") as file:
+                    file.write(file_contents)
+
     return True