diff --git a/ciphers/uint128_t.hpp b/ciphers/uint128_t.hpp
index 634f7c81425..c9995ea67eb 100644
--- a/ciphers/uint128_t.hpp
+++ b/ciphers/uint128_t.hpp
@@ -9,9 +9,9 @@
 
 #include <algorithm>  /// for `std::reverse` and other operations
 #include <cstdint>
-#include <ostream>    /// for `std::cout` overload
-#include <string>     /// for `std::string`
-#include <utility>    /// for `std::pair` library
+#include <ostream>  /// for `std::cout` overload
+#include <string>   /// for `std::string`
+#include <utility>  /// for `std::pair` library
 
 #ifdef _MSC_VER
 #include <intrin.h>  /// for _BitScanForward64 and __BitScanReverse64 operation
@@ -21,13 +21,6 @@
 #define CIPHERS_UINT128_T_HPP_
 class uint128_t;
 
-template <>
-struct std::is_integral<uint128_t> : std::true_type {};
-template <>
-struct std::is_arithmetic<uint128_t> : std::true_type {};
-template <>
-struct std::is_unsigned<uint128_t> : std::true_type {};
-
 /**
  * @brief Adding two string
  * @details Adds two long integer, only used for printing numbers
diff --git a/ciphers/uint256_t.hpp b/ciphers/uint256_t.hpp
index a7ba49a9096..0aa442ee18c 100644
--- a/ciphers/uint256_t.hpp
+++ b/ciphers/uint256_t.hpp
@@ -17,15 +17,6 @@
 
 class uint256_t;
 
-template <>
-struct std::is_integral<uint256_t> : std::true_type {};
-
-template <>
-struct std::is_arithmetic<uint256_t> : std::true_type {};
-
-template <>
-struct std::is_unsigned<uint256_t> : std::true_type {};
-
 /**
  * @class uint256_t
  * @brief class for 256-bit unsigned integer
diff --git a/graphics/CMakeLists.txt b/graphics/CMakeLists.txt
index 23ffcfae179..5228e33d08f 100644
--- a/graphics/CMakeLists.txt
+++ b/graphics/CMakeLists.txt
@@ -6,8 +6,8 @@ if(OpenGL_FOUND)
         include(ExternalProject)
         ExternalProject_Add (
             FREEGLUT-PRJ
-            URL https://github.com/FreeGLUTProject/freeglut/releases/download/v3.4.0/freeglut-3.4.0.tar.gz
-            URL_MD5 f1621464e6525d0368976870cab8f418
+            URL https://github.com/freeglut/freeglut/releases/download/v3.8.0/freeglut-3.8.0.tar.gz
+            URL_HASH SHA256=674dcaff25010e09e450aec458b8870d9e98c46f99538db457ab659b321d9989
             CMAKE_GENERATOR ${CMAKE_GENERATOR}
             CMAKE_GENERATOR_TOOLSET ${CMAKE_GENERATOR_TOOLSET}
             CMAKE_GENERATOR_PLATFORM ${CMAKE_GENERATOR_PLATFORM}