diff --git a/CMakeLists.txt b/CMakeLists.txt
index 44cfd595..6e599d3e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,9 +36,6 @@ set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH}" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
-# Pybind11 2.3 Issue https://github.com/pybind/pybind11/issues/1604
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsized-deallocation")
-
 if(APPLE)
   set(INSTALL_DIR_DEFAULT /Applications/Netgen.app)
 else(APPLE)
diff --git a/external_dependencies/pybind11 b/external_dependencies/pybind11
index a1b71df1..2a150736 160000
--- a/external_dependencies/pybind11
+++ b/external_dependencies/pybind11
@@ -1 +1 @@
-Subproject commit a1b71df137e015d44f7e31f7b6d4807253fb7871
+Subproject commit 2a150736601bb3113877bb673fb934bb60d46ec5