diff --git a/include/kernel-6.6 b/include/kernel-6.6
index a34b45649e459..f4fb9269c20db 100644
--- a/include/kernel-6.6
+++ b/include/kernel-6.6
@@ -1,2 +1,2 @@
-LINUX_VERSION-6.6 = .19
-LINUX_KERNEL_HASH-6.6.19 = b5637e6b72c2b4b12e7db790bc155d141a9c2fe4b25f7b215410107e8747139a
+LINUX_VERSION-6.6 = .21
+LINUX_KERNEL_HASH-6.6.21 = ee0b430148da94d2b13608b8d80b007b7d281dc90e3f19b63cf9a9943810e457
diff --git a/target/linux/generic/hack-6.6/952-add-net-conntrack-events-support-multiple-registrant.patch b/target/linux/generic/hack-6.6/952-add-net-conntrack-events-support-multiple-registrant.patch
index b9fbe68776a9a..ddfdf1eaa2caa 100644
--- a/target/linux/generic/hack-6.6/952-add-net-conntrack-events-support-multiple-registrant.patch
+++ b/target/linux/generic/hack-6.6/952-add-net-conntrack-events-support-multiple-registrant.patch
@@ -123,7 +123,7 @@ Signed-off-by: Zhi Chen <zhichen@codeaurora.org>
  	depends on NETFILTER_ADVANCED
 --- a/net/netfilter/nf_conntrack_core.c
 +++ b/net/netfilter/nf_conntrack_core.c
-@@ -2800,6 +2800,10 @@ int nf_conntrack_init_net(struct net *ne
+@@ -2801,6 +2801,10 @@ int nf_conntrack_init_net(struct net *ne
  	nf_conntrack_ecache_pernet_init(net);
  	nf_conntrack_proto_pernet_init(net);