diff --git a/CHANGELOG.md b/CHANGELOG.md
index 91c3f08..6719e1a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@
 
 ### Removed
 
+- Remove `opentest4j` dependency from `build.gradle.kts` and `libs.versions.toml`, redundant  since IntelliJ Platform 251+
 - Remove redundant Kotlin JVM toolchain configuration from `build.gradle.kts`
 - Remove redundant `intellijPlatform.pluginConfiguration.ideaVersion.sinceBuild` configuration from `build.gradle.kts`
 - Remove redundant `pluginSinceBuild` property from `gradle.properties`
diff --git a/build.gradle.kts b/build.gradle.kts
index 485adc5..ecffdfc 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -13,7 +13,6 @@ plugins {
 // Dependencies are managed with Gradle version catalog - read more: https://docs.gradle.org/current/userguide/version_catalogs.html
 dependencies {
     testImplementation(libs.junit)
-    testImplementation(libs.opentest4j)
 
     // IntelliJ Platform Gradle Plugin Dependencies Extension - read more: https://plugins.jetbrains.com/docs/intellij/tools-intellij-platform-gradle-plugin-dependencies-extension.html
     intellijPlatform {
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 11d5744..5c3c191 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,7 +1,6 @@
 [versions]
 # libraries
 junit = "4.13.2"
-opentest4j = "1.3.0"
 
 # plugins
 changelog = "2.5.0"
@@ -11,7 +10,6 @@ qodana = "2025.3.2"
 
 [libraries]
 junit = { group = "junit", name = "junit", version.ref = "junit" }
-opentest4j = { group = "org.opentest4j", name = "opentest4j", version.ref = "opentest4j" }
 
 [plugins]
 changelog = { id = "org.jetbrains.changelog", version.ref = "changelog" }