diff --git a/DIRECTORY.md b/DIRECTORY.md
index fc4a3c470e..1493a4804d 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -107,6 +107,7 @@
     * [Queue](https://github.com/TheAlgorithms/C/blob/HEAD/data_structures/queue/queue.c)
   * [Stack](https://github.com/TheAlgorithms/C/blob/HEAD/data_structures/stack.c)
   * Stack
+    * [Dynamic Stack](https://github.com/TheAlgorithms/C/blob/HEAD/data_structures/stack/dynamic_stack.c)
     * [Main](https://github.com/TheAlgorithms/C/blob/HEAD/data_structures/stack/main.c)
     * [Parenthesis](https://github.com/TheAlgorithms/C/blob/HEAD/data_structures/stack/parenthesis.c)
     * [Stack](https://github.com/TheAlgorithms/C/blob/HEAD/data_structures/stack/stack.c)
diff --git a/graphics/CMakeLists.txt b/graphics/CMakeLists.txt
index 6bb38bc294..88905f6555 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/v3.2.1/freeglut-3.2.1.tar.gz
-            URL_MD5 cd5c670c1086358598a6d4a9d166949d
+            URL https://github.com/FreeGLUTProject/freeglut/releases/download/v3.4.0/freeglut-3.4.0.tar.gz
+            URL_MD5 f1621464e6525d0368976870cab8f418
             CMAKE_GENERATOR ${CMAKE_GENERATOR} --config Release
             CMAKE_GENERATOR_TOOLSET ${CMAKE_GENERATOR_TOOLSET}
             CMAKE_GENERATOR_PLATFORM ${CMAKE_GENERATOR_PLATFORM}