diff --git a/Libraries/LibC/unistd.cpp b/Libraries/LibC/unistd.cpp
index f6a5fad173..971606b2f8 100644
--- a/Libraries/LibC/unistd.cpp
+++ b/Libraries/LibC/unistd.cpp
@@ -652,4 +652,16 @@ int chroot(const char* path)
     int rc = syscall(SC_chroot, path, strlen(path));
     __RETURN_WITH_ERRNO(rc, rc, -1);
 }
+
+int pledge(const char* promises, const char* execpromises)
+{
+    Syscall::SC_pledge_params params {
+        { promises, promises ? strlen(promises) : 0 },
+        { execpromises, execpromises ? strlen(execpromises) : 0 }
+    };
+    int rc = syscall(SC_pledge, &params);
+    __RETURN_WITH_ERRNO(rc, rc, -1);
 }
+
+}
+
diff --git a/Libraries/LibC/unistd.h b/Libraries/LibC/unistd.h
index 1fd5b870b5..1ca0095a94 100644
--- a/Libraries/LibC/unistd.h
+++ b/Libraries/LibC/unistd.h
@@ -113,6 +113,7 @@ int halt();
 int reboot();
 int mount(const char* source, const char* target, const char* fs_type, int flags);
 int umount(const char* mountpoint);
+int pledge(const char* promises, const char* execpromises);
 
 enum {
     _PC_NAME_MAX,