diff --git a/jhdf/build.gradle b/jhdf/build.gradle
index 1abe4183..910f9c84 100644
--- a/jhdf/build.gradle
+++ b/jhdf/build.gradle
@@ -63,7 +63,7 @@ dependencies {
     testImplementation group: 'org.powermock', name: 'powermock-core', version: '2.0.9'
     // Matchers
     testImplementation group: 'org.hamcrest', name: 'hamcrest', version: '2.2'
-    testImplementation group: 'org.assertj', name: 'assertj-core', version: '3.26.0'
+    testImplementation group: 'org.assertj', name: 'assertj-core', version: '3.26.3'
     // Alternative bitshuffle impl to check results against
     testImplementation 'org.xerial.snappy:snappy-java:1.1.10.5'
     // For parsing h5dump XML output