diff --git a/regressions/pom.xml b/regressions/pom.xml
index 7f261ed..8a18a88 100644
--- a/regressions/pom.xml
+++ b/regressions/pom.xml
@@ -19,6 +19,7 @@
         <tiles-maven-plugin.version>2.10</tiles-maven-plugin.version>
         <kemitix-tiles.version>0.8.1</kemitix-tiles.version>
 
+        <java.version>1.8</java.version>
         <checkstyle.version>8.7</checkstyle.version>
         <sevntu.version>1.27.0</sevntu.version>
         <maven-checkstyle-plugin.version>3.0.0</maven-checkstyle-plugin.version>