diff --git a/.travis.yml b/.travis.yml
index 228b258..f09314b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,7 +25,7 @@ matrix:
             - sourceline: 'ppa:ondrej/nginx-mainline'
           packages:
             - libssl1.1
-      env: COMPILER=gcc-5 KVER=5.4.3
+      env: COMPILER=gcc-5 KVER=5.4.4
     - compiler: gcc
       addons:
         apt:
@@ -35,7 +35,7 @@ matrix:
           packages:
             - gcc-6
             - libssl1.1
-      env: COMPILER=gcc-6 KVER=5.4.3
+      env: COMPILER=gcc-6 KVER=5.4.4
     - compiler: gcc
       addons:
         apt:
@@ -45,7 +45,7 @@ matrix:
           packages:
             - gcc-7
             - libssl1.1
-      env: COMPILER=gcc-7 KVER=5.4.3
+      env: COMPILER=gcc-7 KVER=5.4.4
     - compiler: gcc
       addons:
         apt: