diff --git a/occurrence-trino-udf/pom.xml b/occurrence-trino-udf/pom.xml
index 9dae6ea7a..32a81a68d 100644
--- a/occurrence-trino-udf/pom.xml
+++ b/occurrence-trino-udf/pom.xml
@@ -22,6 +22,8 @@
     <junit-jupiter.version>5.6.3</junit-jupiter.version>
     <geotools.version>22.2</geotools.version>
     <occurrence.version>1.0.5</occurrence.version>
+    <scala.tools.version>2.12</scala.tools.version>
+    <spark.version>3.5.1</spark.version>
 
     <maven-compiler-plugin.version>3.11.0</maven-compiler-plugin.version>
     <maven-shade-plugin.version>3.5.0</maven-shade-plugin.version>
@@ -334,6 +336,13 @@
       <version>${geotools.version}</version>
     </dependency>
 
+    <!-- required for the GeoDistanceUDF -->
+    <dependency>
+      <groupId>org.apache.spark</groupId>
+      <artifactId>spark-sql_${scala.tools.version}</artifactId>
+      <version>${spark.version}</version>
+    </dependency>
+
   </dependencies>
 
 </project>