diff --git a/CHANGES b/CHANGES
index c8688a1efa..1d38a5ade0 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,13 @@
+8.1.0-dev.518 | 2025-09-04 16:21:52 -0700
+
+  * libkqueue: Switch to using HEAD from upstream master (Tim Wojtulewicz, Corelight)
+
+    The upstream recently merge Christian's fixes for the fd_map allocations
+    so that patch doesn't need to be in our fork anymore. I also tested removing
+    the patch about timers from our fork, and it seems to only matter for Linux
+    kernels earlier than 5.3. All of our supported platforms are newer than
+    that.
+
 8.1.0-dev.516 | 2025-09-04 09:04:27 -0700
 
   * Bump auxil/spicy to latest development snapshot (Benjamin Bannier, Corelight)
diff --git a/VERSION b/VERSION
index e33b9185dc..05919af0bf 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-8.1.0-dev.516
+8.1.0-dev.518
diff --git a/auxil/libkqueue b/auxil/libkqueue
index af5612bb0d..a83d56aa2b 160000
--- a/auxil/libkqueue
+++ b/auxil/libkqueue
@@ -1 +1 @@
-Subproject commit af5612bb0db00831b82e706d63176094243c8ad7
+Subproject commit a83d56aa2bd9ba303c112478eb38d7e8e09c44da