diff --git a/core/pom.xml b/core/pom.xml
index f8c24a731..0e61875ab 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -66,7 +66,7 @@
       <plugin>
         <groupId>biz.aQute.bnd</groupId>
         <artifactId>bnd-maven-plugin</artifactId>
-        <version>4.0.0</version>
+        <version>3.5.0</version> <!-- 4.0.0 requires Java 8 -->
         <executions>
           <execution>
             <goals>