diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d13b5c0..50dc5f2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        pg: [17, 16, 15, 14, 13]
+        pg: [18, 17, 16, 15, 14, 13]
     name: PostgreSQL ${{ matrix.pg }}
     runs-on: ubuntu-latest
     container: pgxn/pgxn-tools
diff --git a/tests/bin/create_expected_archive/src/main.rs b/tests/bin/create_expected_archive/src/main.rs
index dafeaa7..1d26753 100644
--- a/tests/bin/create_expected_archive/src/main.rs
+++ b/tests/bin/create_expected_archive/src/main.rs
@@ -26,7 +26,7 @@ fn print_version() {
 
 fn parse_postgres_major_version(server_version_num: String) -> i32 {
 	let i = server_version_num.parse::<i32>().unwrap();
-	if i < 110000 || i >= 180000 {
+	if i < 110000 || i >= 190000 {
 		panic!("invalid postgres server_version_num {}", i);
 	}
 	return i / 10000;