diff --git a/.buckconfig.oss b/.buckconfig.oss
index 638870587d8444..09710692461315 100644
--- a/.buckconfig.oss
+++ b/.buckconfig.oss
@@ -1,5 +1,5 @@
 [buildfile]
-name = BUILD.buck
+name = BUCK.oss
 
 [repositories]
   bazel_skylib = third_party/bazel-skylib/
diff --git a/BUILD.buck b/BUCK.oss
similarity index 100%
rename from BUILD.buck
rename to BUCK.oss
diff --git a/aten/src/ATen/native/quantized/cpu/qnnpack/BUILD.buck b/aten/src/ATen/native/quantized/cpu/qnnpack/BUCK.oss
similarity index 100%
rename from aten/src/ATen/native/quantized/cpu/qnnpack/BUILD.buck
rename to aten/src/ATen/native/quantized/cpu/qnnpack/BUCK.oss
diff --git a/c10/BUILD.buck b/c10/BUCK.oss
similarity index 100%
rename from c10/BUILD.buck
rename to c10/BUCK.oss
diff --git a/third_party/BUILD.buck b/third_party/BUCK.oss
similarity index 100%
rename from third_party/BUILD.buck
rename to third_party/BUCK.oss
diff --git a/tools/autograd/BUILD.buck b/tools/autograd/BUCK.oss
similarity index 100%
rename from tools/autograd/BUILD.buck
rename to tools/autograd/BUCK.oss
diff --git a/tools/jit/BUILD.buck b/tools/jit/BUCK.oss
similarity index 100%
rename from tools/jit/BUILD.buck
rename to tools/jit/BUCK.oss
diff --git a/tools/lite_interpreter/BUILD.buck b/tools/lite_interpreter/BUCK.oss
similarity index 100%
rename from tools/lite_interpreter/BUILD.buck
rename to tools/lite_interpreter/BUCK.oss
diff --git a/tools/setup_helpers/BUILD.buck b/tools/setup_helpers/BUCK.oss
similarity index 100%
rename from tools/setup_helpers/BUILD.buck
rename to tools/setup_helpers/BUCK.oss
diff --git a/torchgen/BUILD.buck b/torchgen/BUCK.oss
similarity index 100%
rename from torchgen/BUILD.buck
rename to torchgen/BUCK.oss