diff --git a/jacodb-analysis/src/main/kotlin/org/jacodb/analysis/graph/JcApplicationGraphImpl.kt b/jacodb-analysis/src/main/kotlin/org/jacodb/analysis/graph/JcApplicationGraphImpl.kt
index c78cc78f6..a53a08454 100644
--- a/jacodb-analysis/src/main/kotlin/org/jacodb/analysis/graph/JcApplicationGraphImpl.kt
+++ b/jacodb-analysis/src/main/kotlin/org/jacodb/analysis/graph/JcApplicationGraphImpl.kt
@@ -26,7 +26,7 @@ import org.jacodb.impl.features.SyncUsagesExtension
 /**
  * Possible we will need JcRawInst instead of JcInst
  */
-class JcApplicationGraphImpl(
+open class JcApplicationGraphImpl(
     override val classpath: JcClasspath,
     private val usages: SyncUsagesExtension
 ) : JcApplicationGraph {