diff --git a/CMakeLists.txt b/CMakeLists.txt
index b9a9977..c255ed0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.14)
 set(projectName "davis")
 project(${projectName} VERSION 0.01 LANGUAGES C CXX)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 if(WIN32)
diff --git a/array_core/CMakeLists.txt b/array_core/CMakeLists.txt
index da37b79..1542014 100644
--- a/array_core/CMakeLists.txt
+++ b/array_core/CMakeLists.txt
@@ -1,6 +1,6 @@
 set(projectName "ArrayCore")
 project(${projectName} VERSION 0.01 LANGUAGES C CXX)
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 if(WIN32)
diff --git a/common_utils/CMakeLists.txt b/common_utils/CMakeLists.txt
index 69d1545..f9964d6 100644
--- a/common_utils/CMakeLists.txt
+++ b/common_utils/CMakeLists.txt
@@ -1,6 +1,6 @@
 set(projectName "CommonUtils")
 project(${projectName} VERSION 0.01 LANGUAGES C CXX)
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 set(SOURCE_FILES
diff --git a/plotly_maker/CMakeLists.txt b/plotly_maker/CMakeLists.txt
index ce830f1..e8e1c55 100644
--- a/plotly_maker/CMakeLists.txt
+++ b/plotly_maker/CMakeLists.txt
@@ -1,6 +1,6 @@
 set(projectName "PlotlyMaker")
 project(${projectName} VERSION 0.01 LANGUAGES C CXX)
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 set(SOURCE_FILES