diff --git a/org.hl7.fhir.convertors/pom.xml b/org.hl7.fhir.convertors/pom.xml
index b9381665e..bedb0ced8 100644
--- a/org.hl7.fhir.convertors/pom.xml
+++ b/org.hl7.fhir.convertors/pom.xml
@@ -97,7 +97,11 @@
           <artifactId>okhttp</artifactId>
           <optional>true</optional>
         </dependency>
-
+        <dependency>
+            <groupId>com.squareup.okio</groupId>
+            <artifactId>okio</artifactId>
+            <optional>true</optional>
+        </dependency>
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>