diff --git a/.alfred/pre.sh b/.alfred/pre.sh
new file mode 100755
index 0000000..296cf78
--- /dev/null
+++ b/.alfred/pre.sh
@@ -0,0 +1 @@
+java -version
diff --git a/pom.xml b/pom.xml
index 455058d..8157f22 100644
--- a/pom.xml
+++ b/pom.xml
@@ -14,7 +14,7 @@
 	<name>wanijo2</name>
 	<description>Wanijo, second edition</description>
 	<properties>
-		<java.version>21</java.version>
+		<java.version>17</java.version>
 		<kotlin.version>1.9.25</kotlin.version>
 		<jdbi.version>3.47.0</jdbi.version>
 	</properties>