diff --git a/build.gradle b/build.gradle
index b1a0dd42a9..c24c6fccf2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -84,8 +84,9 @@ buildscript {
 
     ext.deterministic_rt_version = '1.0-SNAPSHOT'
 
-    // Update 121 is required for ObjectInputFilter and at time of writing 131 was latest:
-    ext.java8_minUpdateVersion = '131'
+    // Update 121 is required for ObjectInputFilter.
+    // Updates [131, 161] also have zip compression bugs on MacOS (High Sierra).
+    ext.java8_minUpdateVersion = '171'
 
     repositories {
         mavenLocal()
diff --git a/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/DummyJar.kt b/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/DummyJar.kt
index c332860669..7e768fc80b 100644
--- a/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/DummyJar.kt
+++ b/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/DummyJar.kt
@@ -88,8 +88,7 @@ class DummyJar(
                     jar.write(arrayOfJunk(DATA_SIZE))
 
                     // One uncompressed text file
-                    val text = """
-Jar: ${_path.toAbsolutePath()}
+                    val text = """Jar: ${_path.toAbsolutePath()}
 Class: ${testClass.name}
 """.toByteArray()
                     jar.putNextEntry(uncompressed("comment.txt", text))
diff --git a/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/JarFilterConfigurationTest.kt b/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/JarFilterConfigurationTest.kt
index a124545ae4..1e52fd4198 100644
--- a/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/JarFilterConfigurationTest.kt
+++ b/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/JarFilterConfigurationTest.kt
@@ -262,7 +262,7 @@ task jarFilter(type: JarFilterTask) {
         testProjectDir.newFile("build.gradle").writeText(script)
         return GradleRunner.create()
             .withProjectDir(testProjectDir.root)
-            .withArguments(getBasicArgsForTasks("jarFilter", "--stacktrace"))
+            .withArguments(getBasicArgsForTasks("jarFilter"))
             .withPluginClasspath()
     }
 
diff --git a/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/MetaFixConfigurationTests.kt b/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/MetaFixConfigurationTests.kt
index bb67dba0c2..84944f6a3f 100644
--- a/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/MetaFixConfigurationTests.kt
+++ b/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/MetaFixConfigurationTests.kt
@@ -69,7 +69,7 @@ task metafix(type: MetaFixerTask) {
         testProjectDir.newFile("build.gradle").writeText(script)
         return GradleRunner.create()
             .withProjectDir(testProjectDir.root)
-            .withArguments(getBasicArgsForTasks("metafix", "--stacktrace"))
+            .withArguments(getBasicArgsForTasks("metafix"))
             .withPluginClasspath()
     }
 
diff --git a/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/Utilities.kt b/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/Utilities.kt
index 62a0a36cff..b0bc5a6bfb 100644
--- a/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/Utilities.kt
+++ b/buildSrc/jarfilter/src/test/kotlin/net/corda/gradle/jarfilter/Utilities.kt
@@ -29,7 +29,7 @@ private val testGradleUserHome: String get() = testGradleUserHomeValue
     ?: throw AssumptionViolatedException("System property 'test.gradle.user.home' not set.")
 
 fun getGradleArgsForTasks(vararg taskNames: String): MutableList<String> = getBasicArgsForTasks(*taskNames).apply { add("--info") }
-fun getBasicArgsForTasks(vararg taskNames: String): MutableList<String> = mutableListOf(*taskNames, "-g", testGradleUserHome)
+fun getBasicArgsForTasks(vararg taskNames: String): MutableList<String> = mutableListOf(*taskNames, "--stacktrace", "-g", testGradleUserHome)
 
 @Throws(IOException::class)
 fun copyResourceTo(resourceName: String, target: Path) {