diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index d00a9bb3a30cfb16623e073414088059481c3e1a..065325d79568d8d52adbd4f39fc0a673763df151 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -115,7 +115,8 @@ set(COMMON_FLAGS
     -Wno-error=literal-suffix
     -Wno-error=sign-compare
     -Wno-error=unused-local-typedefs
-    -Wno-error=parentheses-equality # Warnings in Pybind11
+    -Wno-error=parentheses-equality # Warnings in pybind11
+    --expt-relaxed-constexpr # surppress warnings in Eigen
 )
 
 set(GPU_COMMON_FLAGS
@@ -130,6 +131,7 @@ set(GPU_COMMON_FLAGS
     -Wno-error=unused-local-typedefs
     -Wno-error=unused-function  # Warnings in Numpy Header.
     -Wno-error=array-bounds # Warnings in Eigen::array
+    --expt-relaxed-constexpr # surppress warnings in Eigen
 )
 
 if (APPLE)