diff --git a/data-prepper-plugins/otel-proto-common/build.gradle b/data-prepper-plugins/otel-proto-common/build.gradle
index 03bafff809..2af623c26d 100644
--- a/data-prepper-plugins/otel-proto-common/build.gradle
+++ b/data-prepper-plugins/otel-proto-common/build.gradle
@@ -15,5 +15,5 @@ dependencies {
     implementation 'com.fasterxml.jackson.dataformat:jackson-dataformat-yaml'
     implementation libs.commons.lang3
     implementation libs.commons.codec
-    testImplementation 'org.assertj:assertj-core:3.25.3'
+    testImplementation 'org.assertj:assertj-core:3.26.3'
 }