diff --git a/build.gradle b/build.gradle
index 965bb2d9..6955fe15 100644
--- a/build.gradle
+++ b/build.gradle
@@ -63,9 +63,9 @@ dependencies {
 	implementation 'org.apache.httpcomponents:httpclient:4.5.14'
 	implementation 'com.heroku.sdk:env-keystore:1.1.11'
 
-	implementation 'ca.uhn.hapi.fhir:hapi-fhir-base:8.0.0'
-	implementation 'ca.uhn.hapi.fhir:hapi-fhir-structures-r4:8.0.0'
-	implementation 'ca.uhn.hapi.fhir:hapi-fhir-validation-resources-r4:8.0.0'
+	implementation 'ca.uhn.hapi.fhir:hapi-fhir-base:8.4.0'
+	implementation 'ca.uhn.hapi.fhir:hapi-fhir-structures-r4:8.4.0'
+	implementation 'ca.uhn.hapi.fhir:hapi-fhir-validation-resources-r4:8.4.0'
 	implementation 'com.google.guava:guava:33.4.8-jre'
 	implementation 'org.apache.qpid:qpid-jms-client:2.7.0'
 	implementation 'com.amazonaws:aws-java-sdk-s3:1.12.783'