diff --git a/llvm_version.cmake b/llvm_version.cmake
index 4d79b67..189afa9 100644
--- a/llvm_version.cmake
+++ b/llvm_version.cmake
@@ -1,2 +1,2 @@
-set(LLVM_VERSION 20.1.5)
-set(LLVM_SHA256 97025772b25c6694db049d3c4be5a72d926299aa1a9b861f490d66750e31c9dd)
\ No newline at end of file
+set(LLVM_VERSION 21.1.5)
+set(LLVM_SHA256 eee4de3b3f01ea6dd6b0936ac8be319eef0a65d0022def258c70110e3743807c)