diff --git a/build.gradle b/build.gradle
index aafc87af..7d986986 100644
--- a/build.gradle
+++ b/build.gradle
@@ -62,7 +62,7 @@ implementation group:'com.ibm.fhir', name:'fhir-registry', version:'4.10.2'
 implementation group:'com.ibm.fhir', name:'fhir-term', version:'4.10.2'
 implementation group: 'commons-beanutils', name: 'commons-beanutils', version: '1.9.4'
 
-testImplementation group: 'ch.qos.logback', name: 'logback-classic', version: '1.4.0'
+testImplementation group: 'ch.qos.logback', name: 'logback-classic', version: '1.4.14'
 testImplementation 'org.assertj:assertj-core:3.9.0'
 testImplementation "org.junit.jupiter:junit-jupiter-api:5.8.2"
 testImplementation "org.junit.jupiter:junit-jupiter-params:5.8.2"