diff --git a/bosk-testing/build.gradle b/bosk-testing/build.gradle
index db886ef2..c735dc8d 100644
--- a/bosk-testing/build.gradle
+++ b/bosk-testing/build.gradle
@@ -19,9 +19,9 @@ dependencies {
 	// It's gross that we need to repeat the version info here.
 	// There must be a clean way to do this in Gradle??
 	implementation 'org.mongodb:mongodb-driver-sync:4.1.2'
-	implementation 'org.junit.jupiter:junit-jupiter-api:5.10.1'
-	implementation 'org.junit.jupiter:junit-jupiter-params:5.10.1'
-	runtimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.10.1'
+	implementation 'org.junit.jupiter:junit-jupiter-api:5.10.3'
+	implementation 'org.junit.jupiter:junit-jupiter-params:5.10.3'
+	runtimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.10.3'
 }
 
 // SpotBugs warnings on test code are not useful and often counterproductive
diff --git a/buildSrc/src/main/groovy/bosk.development.gradle b/buildSrc/src/main/groovy/bosk.development.gradle
index b01c0d0c..b24752a1 100644
--- a/buildSrc/src/main/groovy/bosk.development.gradle
+++ b/buildSrc/src/main/groovy/bosk.development.gradle
@@ -54,9 +54,9 @@ dependencies {
 	testAnnotationProcessor "org.projectlombok:lombok:1.18.30"
 	testCompileOnly "org.projectlombok:lombok:1.18.30"
 
-	testImplementation "org.junit.jupiter:junit-jupiter-api:5.10.1"
-	testImplementation "org.junit.jupiter:junit-jupiter-params:5.10.1"
-	testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:5.10.1"
+	testImplementation "org.junit.jupiter:junit-jupiter-api:5.10.3"
+	testImplementation "org.junit.jupiter:junit-jupiter-params:5.10.3"
+	testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:5.10.3"
 
 	testImplementation "org.testcontainers:testcontainers:1.19.3"
 	testImplementation "org.testcontainers:junit-jupiter:1.19.3"
diff --git a/lib-testing/build.gradle b/lib-testing/build.gradle
index f8856c5d..4937f33f 100644
--- a/lib-testing/build.gradle
+++ b/lib-testing/build.gradle
@@ -22,9 +22,9 @@ dependencies {
 	// It's gross that we need to repeat the version info here.
 	// There must be a clean way to do this in Gradle??
 	implementation 'org.mongodb:mongodb-driver-sync:4.1.2'
-	implementation 'org.junit.jupiter:junit-jupiter-api:5.10.1'
-	implementation 'org.junit.jupiter:junit-jupiter-params:5.10.1'
-	runtimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.10.1'
+	implementation 'org.junit.jupiter:junit-jupiter-api:5.10.3'
+	implementation 'org.junit.jupiter:junit-jupiter-params:5.10.3'
+	runtimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.10.3'
 }
 
 spotbugsMain.enabled = false // Spotbugs is counterproductive on test code