diff --git a/core/src/main/java/org/nwapw/abacus/Abacus.java b/core/src/main/java/org/nwapw/abacus/Abacus.java
index c9ecf87..1b1dc49 100644
--- a/core/src/main/java/org/nwapw/abacus/Abacus.java
+++ b/core/src/main/java/org/nwapw/abacus/Abacus.java
@@ -64,6 +64,7 @@ public class Abacus {
 
         pluginManager.addListener(shuntingYardParser);
         pluginManager.addListener(lexerTokenizer);
+        pluginManager.addListener(promotionManager);
     }
 
     /**
diff --git a/core/src/main/kotlin/org/nwapw/abacus/number/PromotionManager.kt b/core/src/main/kotlin/org/nwapw/abacus/number/PromotionManager.kt
index 22e9489..421d642 100644
--- a/core/src/main/kotlin/org/nwapw/abacus/number/PromotionManager.kt
+++ b/core/src/main/kotlin/org/nwapw/abacus/number/PromotionManager.kt
@@ -6,7 +6,6 @@ import org.nwapw.abacus.plugin.PluginListener
 import org.nwapw.abacus.plugin.PluginManager
 import java.util.function.Function
 
-class PromotionManager(val abacus: Abacus) {
 /**
  * A class that handles promotions based on priority and the
  * transition paths each implementation provides.
@@ -72,4 +71,13 @@ class PromotionManager(val abacus: Abacus) : PluginListener {
         }.toTypedArray(), promotedTo = highestPriority)
     }
 
+    override fun onLoad(manager: PluginManager?) {
+
+    }
+
+    override fun onUnload(manager: PluginManager?) {
+        computePaths.clear()
+    }
+
+
 }
\ No newline at end of file