diff --git a/server/build.gradle b/server/build.gradle
index 45ec2300008f2..8009cb45386d0 100644
--- a/server/build.gradle
+++ b/server/build.gradle
@@ -113,7 +113,7 @@ dependencies {
 
   // utilities
   api project(":libs:opensearch-cli")
-  api 'com.carrotsearch:hppc:0.8.1'
+  api 'com.carrotsearch:hppc:0.9.1'
 
   // time handling, remove with java 8 time
   api "joda-time:joda-time:${versions.joda}"