Oracle JDK 8 is no longer available, only 9 through 14.
diff --git a/.travis.yml b/.travis.yml
index 96216a2..6fa6140 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,6 @@
 sudo: false
 
 jdk:
-  - oraclejdk8
   - oraclejdk11
   - openjdk8
   - openjdk11