diff --git a/Dockerfile b/Dockerfile
index 99b84bf..7f66dd6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@ FROM alpine:3.19.0 as build
 ARG CURL_VERSION=8.5.0
 ARG WS_VERSION=v5.6.6-stable
 ARG NGH3_VERSION=v1.1.0
-ARG NGTCP2_VERSION=v1.1.0
+ARG NGTCP2_VERSION=v1.2.0
 
 RUN apk add --no-cache ca-certificates git build-base cmake autoconf automake coreutils libtool \
                        nghttp2-dev nghttp2-static zlib-dev zlib-static && \