diff --git a/src/main/java/net/fabricmc/loom/configuration/CompileConfiguration.java b/src/main/java/net/fabricmc/loom/configuration/CompileConfiguration.java
index 6552089..45d114e 100644
--- a/src/main/java/net/fabricmc/loom/configuration/CompileConfiguration.java
+++ b/src/main/java/net/fabricmc/loom/configuration/CompileConfiguration.java
@@ -97,6 +97,7 @@ public final class CompileConfiguration {
 		extendsFrom(JavaPlugin.IMPLEMENTATION_CONFIGURATION_NAME, Constants.Configurations.MAPPINGS_FINAL, project);
 
 		extendsFrom(JavaPlugin.RUNTIME_CLASSPATH_CONFIGURATION_NAME, Constants.Configurations.LOOM_DEVELOPMENT_DEPENDENCIES, project);
+		extendsFrom(JavaPlugin.TEST_RUNTIME_CLASSPATH_CONFIGURATION_NAME, Constants.Configurations.LOOM_DEVELOPMENT_DEPENDENCIES, project);
 	}
 
 	public static void configureCompile(Project p) {