diff --git a/WORKSPACE b/WORKSPACE
index 6a0d03e..3001d4c 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -15,9 +15,9 @@
 
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
-LLVM_COMMIT = "67cfefebbbbb3a5923c47c31293a8f76596de8be"
+LLVM_COMMIT = "6660319cef6edf114a4cc30013039fa5553ba408"
 
-LLVM_SHA256 = "e7b249236e0d679e50c7ec3d38a4c7fdb1c3e7fd1044cb4d598a74777b4cbaa0"
+LLVM_SHA256 = "4de12d35cbdd17ec2159091c11899800b34ee8ee95ba02fe3d4f478d7a3018a0"
 
 LLVM_BAZEL_TAG = "llvm-project-{commit}".format(commit = LLVM_COMMIT)
 
diff --git a/build_tools/llvm_version.txt b/build_tools/llvm_version.txt
index 08ecfd4..21539c7 100644
--- a/build_tools/llvm_version.txt
+++ b/build_tools/llvm_version.txt
@@ -1,2 +1,2 @@
-67cfefebbbbb3a5923c47c31293a8f76596de8be
+6660319cef6edf114a4cc30013039fa5553ba408