diff --git a/benchmark/build.gradle.kts b/benchmark/build.gradle.kts
index 7629c76..444711e 100644
--- a/benchmark/build.gradle.kts
+++ b/benchmark/build.gradle.kts
@@ -13,11 +13,11 @@ dependencies {
     implementation(libs.bundles.kotlinxEcosystem)
     
     // External JSON5 library for comparison
-    implementation("at.syntaxerror:json5:2.1.0")
+    implementation(libs.syntaxerrorJson5)
 
     // Test dependencies
     testImplementation(kotlin("test"))
-    testImplementation("org.junit.jupiter:junit-jupiter:5.10.1")
+    testImplementation(libs.junit)
 }
 
 application {
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 4614791..7e9e34f 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -8,6 +8,9 @@ kotlinxDatetime = "0.6.1"
 kotlinxSerializationJSON = "1.7.3"
 kotlinxCoroutines = "1.9.0"
 kotlinxKover = "0.9.1"
+junit = "5.10.1"
+kotest = "5.8.0"
+syntaxerrorJson5 = "2.1.0"
 
 [libraries]
 kotlinGradlePlugin = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin", version.ref = "kotlin" }
@@ -15,9 +18,19 @@ kotlinxDatetime = { module = "org.jetbrains.kotlinx:kotlinx-datetime", version.r
 kotlinxSerialization = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "kotlinxSerializationJSON" }
 kotlinxCoroutines = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "kotlinxCoroutines" }
 
+# Testing libraries
+junit = { module = "org.junit.jupiter:junit-jupiter", version.ref = "junit" }
+kotestRunner = { module = "io.kotest:kotest-runner-junit5", version.ref = "kotest" }
+kotestAssertions = { module = "io.kotest:kotest-assertions-core", version.ref = "kotest" }
+kotestProperty = { module = "io.kotest:kotest-property", version.ref = "kotest" }
+
+# External libraries
+syntaxerrorJson5 = { module = "at.syntaxerror:json5", version.ref = "syntaxerrorJson5" }
+
 # Libraries can be bundled together for easier import
 [bundles]
 kotlinxEcosystem = ["kotlinxDatetime", "kotlinxSerialization", "kotlinxCoroutines"]
+testing = ["junit", "kotestRunner", "kotestAssertions", "kotestProperty"]
 
 [plugins]
 kotlinPluginSerialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
diff --git a/lib/build.gradle.kts b/lib/build.gradle.kts
index 2cbd159..ccc0fb6 100644
--- a/lib/build.gradle.kts
+++ b/lib/build.gradle.kts
@@ -11,12 +11,7 @@ dependencies {
 
     // Test dependencies
     testImplementation(kotlin("test"))
-    testImplementation("org.junit.jupiter:junit-jupiter:5.10.1")
-    testImplementation("io.kotest:kotest-runner-junit5:5.8.0")
-    testImplementation("io.kotest:kotest-assertions-core:5.8.0")
-
-    // For property-based testing if needed
-    testImplementation("io.kotest:kotest-property:5.8.0")
+    testImplementation(libs.bundles.testing)
 }
 
 tasks.test {