diff --git a/build.sbt b/build.sbt
index f5108d6b..55e0e808 100644
--- a/build.sbt
+++ b/build.sbt
@@ -76,6 +76,10 @@ lazy val `elastiknn-lucene` = project
       "org.apache.lucene" % "lucene-core" % LuceneVersion,
       "org.apache.lucene" % "lucene-analysis-common" % LuceneVersion % Test
     ),
+    javacOptions ++= Seq(
+      "--add-exports",
+      "java.base/jdk.internal.vm.annotation=ALL-UNNAMED"
+    ),
     TestSettings
   )
 
diff --git a/elastiknn-lucene/src/main/java/com/klibisz/elastiknn/search/ArrayHitCounter.java b/elastiknn-lucene/src/main/java/com/klibisz/elastiknn/search/ArrayHitCounter.java
index a2b5b081..d5aafeed 100644
--- a/elastiknn-lucene/src/main/java/com/klibisz/elastiknn/search/ArrayHitCounter.java
+++ b/elastiknn-lucene/src/main/java/com/klibisz/elastiknn/search/ArrayHitCounter.java
@@ -1,5 +1,6 @@
 package com.klibisz.elastiknn.search;
 
+import jdk.internal.vm.annotation.ForceInline;
 import org.apache.lucene.search.DocIdSetIterator;
 
 import java.util.Arrays;
@@ -30,6 +31,7 @@ public ArrayHitCounter(int numDocs) {
         this(numDocs, 10);
     }
 
+    @ForceInline
     private void incrementKeyByCount(int docId, short count) {
         int newCount = (docIdToCount[docId] += count);
         if (newCount > maxCount) maxCount = newCount;