diff --git a/build.gradle b/build.gradle
index 79129aa..0422573 100644
--- a/build.gradle
+++ b/build.gradle
@@ -113,7 +113,7 @@ tasks.register('jspecifySamplesTest', Test) {
     include '**/NullSpecTest$Lenient.class'
     include '**/NullSpecTest$Strict.class'
 
-    inputs.files("${jspecify.projectDir}/samples")
+    inputs.files(unzipConformanceTestSuite)
 }
 
 tasks.register('unzipConformanceTestSuite', Copy) {
@@ -140,11 +140,11 @@ tasks.register('conformanceTests', Test) {
     }
 
     // Conformance tests run on the samples directory
-    inputs.dir("${jspecify.projectDir}/samples")
+    inputs.dir("${unzipConformanceTestSuite.destinationDir}/samples")
     inputs.files("tests/ConformanceTestOnSamples-report.txt")
     doFirst {
         systemProperties([
-            "JSpecifyConformanceTest.samples.inputs": "${jspecify.projectDir}/samples",
+            "JSpecifyConformanceTest.samples.inputs": "${unzipConformanceTestSuite.destinationDir}/samples",
             "JSpecifyConformanceTest.samples.report": "tests/ConformanceTestOnSamples-report.txt"
         ])
     }
diff --git a/src/test/java/tests/NullSpecTest.java b/src/test/java/tests/NullSpecTest.java
index 117f112..d5ed847 100644
--- a/src/test/java/tests/NullSpecTest.java
+++ b/src/test/java/tests/NullSpecTest.java
@@ -49,7 +49,7 @@ public Lenient(List<File> testFiles) {
 
     @Parameters
     public static String[] getTestDirs() {
-      return new String[] {"../../jspecify/samples"};
+      return getSamplesDirs();
     }
   }
 
@@ -61,10 +61,14 @@ public Strict(List<File> testFiles) {
 
     @Parameters
     public static String[] getTestDirs() {
-      return new String[] {"../../jspecify/samples"};
+      return getSamplesDirs();
     }
   }
 
+  private static String[] getSamplesDirs() {
+    return new String[] {"../build/conformanceTests/samples"};
+  }
+
   private final boolean strict;
 
   NullSpecTest(List<File> testFiles, boolean strict) {