diff --git a/pom.xml b/pom.xml
index 03433a0c..3cda7b6c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -49,7 +49,7 @@
   </developers>
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <solr.version>7.7.3</solr.version>
+    <solr.version>9.1.0</solr.version>
     <slf4j.version>2.0.17</slf4j.version>
     <log4j.version>2.25.3</log4j.version>
     <restlet.version>2.4.3</restlet.version>