diff --git a/third_party/llvm-7.0/configs/android/include/llvm/Config/llvm-config.h b/third_party/llvm-7.0/configs/android/include/llvm/Config/llvm-config.h
index f7d3c9b..9219b63 100644
--- a/third_party/llvm-7.0/configs/android/include/llvm/Config/llvm-config.h
+++ b/third_party/llvm-7.0/configs/android/include/llvm/Config/llvm-config.h
@@ -34,7 +34,7 @@
 #endif
 
 /* Define if threads enabled */
-#define LLVM_ENABLE_THREADS 0
+#define LLVM_ENABLE_THREADS 1
 
 /* Has gcc/MSVC atomic intrinsics */
 #define LLVM_HAS_ATOMICS 1
diff --git a/third_party/llvm-7.0/configs/darwin/include/llvm/Config/llvm-config.h b/third_party/llvm-7.0/configs/darwin/include/llvm/Config/llvm-config.h
index 831460c..54d348b 100644
--- a/third_party/llvm-7.0/configs/darwin/include/llvm/Config/llvm-config.h
+++ b/third_party/llvm-7.0/configs/darwin/include/llvm/Config/llvm-config.h
@@ -28,7 +28,7 @@
 #endif
 
 /* Define if threads enabled */
-#define LLVM_ENABLE_THREADS 0
+#define LLVM_ENABLE_THREADS 1
 
 /* Has gcc/MSVC atomic intrinsics */
 #define LLVM_HAS_ATOMICS 1
diff --git a/third_party/llvm-7.0/configs/fuchsia/include/llvm/Config/llvm-config.h b/third_party/llvm-7.0/configs/fuchsia/include/llvm/Config/llvm-config.h
index f906dc5..ec30fec 100644
--- a/third_party/llvm-7.0/configs/fuchsia/include/llvm/Config/llvm-config.h
+++ b/third_party/llvm-7.0/configs/fuchsia/include/llvm/Config/llvm-config.h
@@ -30,7 +30,7 @@
 #endif
 
 /* Define if threads enabled */
-#define LLVM_ENABLE_THREADS 0
+#define LLVM_ENABLE_THREADS 1
 
 /* Has gcc/MSVC atomic intrinsics */
 #define LLVM_HAS_ATOMICS 1
diff --git a/third_party/llvm-7.0/configs/linux/include/llvm/Config/llvm-config.h b/third_party/llvm-7.0/configs/linux/include/llvm/Config/llvm-config.h
index 1eaa4f9..2e740b9 100644
--- a/third_party/llvm-7.0/configs/linux/include/llvm/Config/llvm-config.h
+++ b/third_party/llvm-7.0/configs/linux/include/llvm/Config/llvm-config.h
@@ -50,7 +50,7 @@
 #endif
 
 /* Define if threads enabled */
-#define LLVM_ENABLE_THREADS 0
+#define LLVM_ENABLE_THREADS 1
 
 /* Has gcc/MSVC atomic intrinsics */
 #define LLVM_HAS_ATOMICS 1
diff --git a/third_party/llvm-7.0/configs/windows/include/llvm/Config/llvm-config.h b/third_party/llvm-7.0/configs/windows/include/llvm/Config/llvm-config.h
index 6c922b0..7bc36cb 100644
--- a/third_party/llvm-7.0/configs/windows/include/llvm/Config/llvm-config.h
+++ b/third_party/llvm-7.0/configs/windows/include/llvm/Config/llvm-config.h
@@ -48,7 +48,7 @@
 #endif
 
 /* Define if threads enabled */
-#define LLVM_ENABLE_THREADS 0
+#define LLVM_ENABLE_THREADS 1
 
 /* Has gcc/MSVC atomic intrinsics */
 #define LLVM_HAS_ATOMICS 1