diff --git a/.abf.yml b/.abf.yml
index ac66f20..f9a9f13 100644
--- a/.abf.yml
+++ b/.abf.yml
@@ -1,2 +1,2 @@
 sources:
-  ngtcp2-1.8.0.tar.gz: 9b33b7fa7ebb8de10a2678677e15fd7f96799bfa
+  ngtcp2-1.8.1.tar.gz: c721e365a8357b1ac9b3fef7f0feacf1f0651e19
diff --git a/ngtcp2.spec b/ngtcp2.spec
index b8fbfdd..71d3e05 100644
--- a/ngtcp2.spec
+++ b/ngtcp2.spec
@@ -13,7 +13,7 @@
 %define 	secscan 0
 
 Name:		ngtcp2
-Version:	1.8.0
+Version:	1.8.1
 Release:	1
 Summary:	ngtcp2 project is an effort to implement IETF QUIC protocol
 License:	MIT