diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index c4486d4..ee69dd6 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/src/test/groovy/net/fabricmc/loom/EmptyBuildFunctionalTest.groovy b/src/test/groovy/net/fabricmc/loom/EmptyBuildFunctionalTest.groovy
index 954565d..55a01a5 100644
--- a/src/test/groovy/net/fabricmc/loom/EmptyBuildFunctionalTest.groovy
+++ b/src/test/groovy/net/fabricmc/loom/EmptyBuildFunctionalTest.groovy
@@ -37,6 +37,7 @@ class EmptyBuildFunctionalTest extends Specification {
 				.withProjectDir(testProjectDir.root)
 				.withArguments('build')
 				.withPluginClasspath()
+				.withGradleVersion("5.1.1")
 				.build()
 
 		then:
diff --git a/src/test/groovy/net/fabricmc/loom/MixinBuildFunctionalTest.groovy b/src/test/groovy/net/fabricmc/loom/MixinBuildFunctionalTest.groovy
index 488dd2b..4ac2e90 100644
--- a/src/test/groovy/net/fabricmc/loom/MixinBuildFunctionalTest.groovy
+++ b/src/test/groovy/net/fabricmc/loom/MixinBuildFunctionalTest.groovy
@@ -59,9 +59,10 @@ class MixinBuildFunctionalTest extends Specification {
 
 		when:
 		def result = GradleRunner.create()
-				.withPluginClasspath()
 				.withProjectDir(testProjectDir.root)
 				.withArguments('build')
+				.withPluginClasspath()
+				.withGradleVersion("5.1.1")
 				.build()
 
 		then:
diff --git a/src/test/groovy/net/fabricmc/loom/SimpleBuildFunctionalTest.groovy b/src/test/groovy/net/fabricmc/loom/SimpleBuildFunctionalTest.groovy
index f914260..9ff669e 100644
--- a/src/test/groovy/net/fabricmc/loom/SimpleBuildFunctionalTest.groovy
+++ b/src/test/groovy/net/fabricmc/loom/SimpleBuildFunctionalTest.groovy
@@ -47,6 +47,7 @@ class SimpleBuildFunctionalTest extends Specification {
 				.withProjectDir(testProjectDir.root)
 				.withArguments('build')
 				.withPluginClasspath()
+				.withGradleVersion("5.1.1")
 				.build()
 
 		then: