diff --git a/.travis.yml b/.travis.yml
index 1a8bcbc..885e47d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,7 +22,7 @@ env:
     - NGX_BUILD_JOBS=$JOBS
     - TEST_NGINX_SLEEP=0.006
   matrix:
-    - NGINX_VERSION=1.21.4
+    - NGINX_VERSION=1.25.3
 
 before_install:
   - sudo apt-get install -qq -y axel cpanminus libtest-base-perl libtext-diff-perl liburi-perl libwww-perl libtest-longstring-perl liblist-moreutils-perl > build.log 2>&1 || (cat build.log && exit 1)