diff --git a/src/allocator/GBM.cpp b/src/allocator/GBM.cpp
index b533e9b..5a3757c 100644
--- a/src/allocator/GBM.cpp
+++ b/src/allocator/GBM.cpp
@@ -5,6 +5,7 @@
 #include "Shared.hpp"
 #include <xf86drm.h>
 #include <gbm.h>
+#include <unistd.h>
 
 using namespace Aquamarine;
 using namespace Hyprutils::Memory;
diff --git a/src/backend/Session.cpp b/src/backend/Session.cpp
index 5ec4b48..9bf0fd9 100644
--- a/src/backend/Session.cpp
+++ b/src/backend/Session.cpp
@@ -9,6 +9,7 @@ extern "C" {
 #include <sys/stat.h>
 #include <xf86drmMode.h>
 #include <linux/input.h>
+#include <unistd.h>
 }
 
 using namespace Aquamarine;
diff --git a/src/backend/Wayland.cpp b/src/backend/Wayland.cpp
index 399d5a9..537e12b 100644
--- a/src/backend/Wayland.cpp
+++ b/src/backend/Wayland.cpp
@@ -8,6 +8,7 @@
 #include <gbm.h>
 #include <fcntl.h>
 #include <sys/mman.h>
+#include <unistd.h>
 
 using namespace Aquamarine;
 using namespace Hyprutils::Memory;