diff --git a/assets/get_all_prebuilt_otp_version_from_bob.py b/assets/get_all_prebuilt_otp_version_from_bob.py
deleted file mode 100644
index 9c77df8..0000000
--- a/assets/get_all_prebuilt_otp_version_from_bob.py
+++ /dev/null
@@ -1,26 +0,0 @@
-import json
-import requests
-
-def get_all_prebuilt_version_from_bob():
-    # ALLOW_OS_RELEASE = ["ubuntu-14.04", "ubuntu-16.04", "ubuntu-18.04", "ubuntu-20.04", "ubuntu-22.04", "ubuntu-24.04"]
-    ALLOW_OS_RELEASE = ["ubuntu-20.04"]
-    all_version_info = []
-    for release in ALLOW_OS_RELEASE:
-        url = f"https://builds.hex.pm/builds/otp/{release}/builds.txt"
-        response = requests.get(url)
-        all_version_info = response.text.split("\n")
-    
-    all_prebuilt_versions = []
-    for version in all_version_info:
-        if version.split(" ")[0]:
-            all_prebuilt_versions.append(version.split(" ")[0])
-    return all_prebuilt_versions
-
-if __name__ == "__main__":
-    versions = get_all_prebuilt_version_from_bob()
-    versions.sort(reverse=True)
-    print(versions)
-    with open("prebuilt_versions.txt", 'w') as file:
-        for version in versions:
-            file.write(version + '\n')
-    
\ No newline at end of file
diff --git a/lib/erlang_utils.lua b/lib/erlang_utils.lua
index 6e239eb..540564c 100644
--- a/lib/erlang_utils.lua
+++ b/lib/erlang_utils.lua
@@ -60,7 +60,7 @@ end
 function erlang_utils.get_erlang_release_verions()
     local search_url = "https://fastly.jsdelivr.net/gh/version-fox/vfox-erlang@support-download-bin/assets/versions.txt"
 
-    local PRE_BUILT_OS_RELEASE = erlang_utils.get_config_from_env("USE_PREBUILT_OTP")
+    -- local PRE_BUILT_OS_RELEASE = erlang_utils.get_config_from_env("USE_PREBUILT_OTP")
 
     -- if erlang_utils.get_config_from_env("USE_PREBUILT_OTP") then
     --     -- FIXME: replace to release branch
@@ -71,17 +71,10 @@ function erlang_utils.get_erlang_release_verions()
         url = search_url
     })
     local result = {}
-    local prefix = "OTP-"
     for version in string.gmatch(resp.body, '([^\n]+)') do
-        if version:sub(1, #prefix) == prefix and PRE_BUILT_OS_RELEASE then
-            table.insert(result, {
-                version = version
-            })
-        else
-            table.insert(result, {
-                version = version
-            })
-        end
+        table.insert(result, {
+            version = version
+        })
     end
     return result
 end