diff --git a/include/ReWindow/types/MouseButton.h b/include/ReWindow/types/MouseButton.h
index 4ac6d3e..3ae18d5 100644
--- a/include/ReWindow/types/MouseButton.h
+++ b/include/ReWindow/types/MouseButton.h
@@ -35,6 +35,9 @@ namespace MouseButtons
     static const MouseButton Mouse5         ("5", 9);
     static const MouseButton Unimplemented  ("?", 0);
 
+    static const MouseButton PinchIn ("+", 6);
+    static const MouseButton PinchOut("-", 7);
+
     /// NOTE: IsMouseButtonDown will not return correctly for the mouse-wheel-buttons, because the action is effectively instantaneous.
     static const MouseButton MWheelUp       ("U", 4);
     /// NOTE: IsMouseButtonDown will not return correctly for the mouse-wheel-buttons, because the action is effectively instantaneous.
diff --git a/src/platform/linux/Window.cpp b/src/platform/linux/Window.cpp
index 9606ea5..c0f4cfa 100644
--- a/src/platform/linux/Window.cpp
+++ b/src/platform/linux/Window.cpp
@@ -1,4 +1,5 @@
 #include <cstring>
+#include <thread>
 #include <ReWindow/types/Window.h>
 #include <ReWindow/types/Cursors.h>
 #include <ReWindow/Logger.h>
diff --git a/src/types/mousebutton.cpp b/src/types/mousebutton.cpp
index 75a2d81..59b1ede 100644
--- a/src/types/mousebutton.cpp
+++ b/src/types/mousebutton.cpp
@@ -25,6 +25,8 @@ MouseButton GetMouseButtonFromXButton(unsigned int button) {
         //case 4: return MouseButtons::MWheelUp;
         //case 5: return MouseButtons::MWheelDown;
             //For *whatever* reason. These aren't in X.h
+        case 6: return MouseButtons::PinchIn;
+        case 7: return MouseButtons::PinchOut;
         case 8: return MouseButtons::Mouse4;
         case 9: return MouseButtons::Mouse5;
         default: {