diff --git a/CMakeLists.txt b/CMakeLists.txt
index edc0a9cba..efcffe17e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,8 @@ endif()
 
 set(IMEX_EXTERNAL_PROJECT_BUILD OFF)
 
-set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wall -Werror -Wnon-virtual-dtor")
+# TODO: Add Werror whcih was switched off temporary since upstream build error
+set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wall -Wnon-virtual-dtor")
 
 if(NOT (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) AND NOT DEFINED MLIR_BINARY_DIR)
     # Building as part of LLVM via the external project mechanism.
diff --git a/build_tools/llvm_version.txt b/build_tools/llvm_version.txt
index b1f60a980..897a0e8e0 100644
--- a/build_tools/llvm_version.txt
+++ b/build_tools/llvm_version.txt
@@ -1 +1 @@
-3ed76d05a78dd543a44abf0a152fe88d3a21bb1d
+d83fdd0c25dc0377ce4f6ef52859e0af108b2214