diff --git a/backends/example/example_backend_delegate_passes/TARGETS b/backends/example/example_backend_delegate_passes/BUCK
similarity index 76%
rename from backends/example/example_backend_delegate_passes/TARGETS
rename to backends/example/example_backend_delegate_passes/BUCK
index 9e3b06486a8..49d4b985497 100644
--- a/backends/example/example_backend_delegate_passes/TARGETS
+++ b/backends/example/example_backend_delegate_passes/BUCK
@@ -1,8 +1,9 @@
+load("@fbcode_macros//build_defs:build_file_migration.bzl", "fbcode_target", "non_fbcode_target")
 load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
 
 oncall("executorch")
 
-runtime.python_library(
+fbcode_target(_kind = runtime.python_library,
     name = "lib",
     srcs = [
         "merge_to_dim_pass.py",
diff --git a/backends/example/example_operators/TARGETS b/backends/example/example_operators/BUCK
similarity index 74%
rename from backends/example/example_operators/TARGETS
rename to backends/example/example_operators/BUCK
index 70f8f3cc0c5..50061f819c2 100644
--- a/backends/example/example_operators/TARGETS
+++ b/backends/example/example_operators/BUCK
@@ -1,8 +1,9 @@
+load("@fbcode_macros//build_defs:build_file_migration.bzl", "fbcode_target", "non_fbcode_target")
 load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
 
 oncall("executorch")
 
-runtime.python_library(
+fbcode_target(_kind = runtime.python_library,
     name = "example_operators_lib",
     srcs = [
         "adaptive_avg_pool2d.py",
diff --git a/backends/mediatek/TARGETS b/backends/mediatek/BUCK
similarity index 74%
rename from backends/mediatek/TARGETS
rename to backends/mediatek/BUCK
index 9d3cd9459a4..fa68ea9c2be 100644
--- a/backends/mediatek/TARGETS
+++ b/backends/mediatek/BUCK
@@ -1,6 +1,7 @@
+load("@fbcode_macros//build_defs:build_file_migration.bzl", "fbcode_target", "non_fbcode_target")
 load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
 
-runtime.python_library(
+fbcode_target(_kind = runtime.python_library,
     name = "preprocess",
     srcs = [
         "preprocess.py"
@@ -14,7 +15,7 @@ runtime.python_library(
     ],
 )
 
-runtime.python_library(
+fbcode_target(_kind = runtime.python_library,
     name = "partitioner",
     srcs = [
         "partitioner.py"
diff --git a/backends/mediatek/_passes/TARGETS b/backends/mediatek/_passes/BUCK
similarity index 68%
rename from backends/mediatek/_passes/TARGETS
rename to backends/mediatek/_passes/BUCK
index def649d8857..931c337cf4e 100644
--- a/backends/mediatek/_passes/TARGETS
+++ b/backends/mediatek/_passes/BUCK
@@ -1,6 +1,7 @@
+load("@fbcode_macros//build_defs:build_file_migration.bzl", "fbcode_target", "non_fbcode_target")
 load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
 
-runtime.python_library(
+fbcode_target(_kind = runtime.python_library,
     name = "passes",
     srcs = [
         "__init__.py",