diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index da048d8..a9b8415 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        os: [ubuntu-18.04, ubuntu-20.04]
+        os: [ubuntu-20.04, ubuntu-22.04]
         jdk: [8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21]
 
     name: Test on ${{ matrix.os }} with JDK ${{ matrix.jdk }}
diff --git a/dev-resources/insn/test.clj b/dev-resources/insn/test.clj
index 2f81869..b02e7fb 100644
--- a/dev-resources/insn/test.clj
+++ b/dev-resources/insn/test.clj
@@ -17,7 +17,7 @@
                "\\.")
        last Long/valueOf))
 
-(def max-version 18)
+(def max-version 21)
 
 (when (>= jvm 9)
   (require 'insn.v9-bytecode-test))