diff --git a/OWLTools-Solr/pom.xml b/OWLTools-Solr/pom.xml
index 1421f089a..d91023e38 100644
--- a/OWLTools-Solr/pom.xml
+++ b/OWLTools-Solr/pom.xml
@@ -48,7 +48,7 @@
 		<dependency>
 			<groupId>org.yaml</groupId>
 			<artifactId>snakeyaml</artifactId>
-			<version>1.26</version>
+			<version>1.31</version>
 		</dependency>
 		<dependency>
 			<groupId>com.google.code.gson</groupId>