diff --git a/.clang-format b/.clang-format
index 9b3aa8b7213b2..ecb44bfabd9aa 100644
--- a/.clang-format
+++ b/.clang-format
@@ -1 +1,2 @@
 BasedOnStyle: LLVM
+LineEnding: LF
diff --git a/clang/.clang-format b/clang/.clang-format
index 9b3aa8b7213b2..ecb44bfabd9aa 100644
--- a/clang/.clang-format
+++ b/clang/.clang-format
@@ -1 +1,2 @@
 BasedOnStyle: LLVM
+LineEnding: LF
diff --git a/llvm/.clang-format b/llvm/.clang-format
index 5bead5f39dd3c..ecb44bfabd9aa 100644
--- a/llvm/.clang-format
+++ b/llvm/.clang-format
@@ -1,2 +1,2 @@
 BasedOnStyle: LLVM
-
+LineEnding: LF
diff --git a/mlir/.clang-format b/mlir/.clang-format
index a74fda4b67345..76cc928e64588 100644
--- a/mlir/.clang-format
+++ b/mlir/.clang-format
@@ -1,2 +1,3 @@
 BasedOnStyle: LLVM
 AlwaysBreakTemplateDeclarations: Yes
+LineEnding: LF