diff --git a/Dockerfile b/Dockerfile
index c245132..0e6c712 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:7.1-cli
+FROM php:5.6-cli
 
 # Work out of this directory
 WORKDIR /usr/flaptastic
diff --git a/composer.json b/composer.json
index 354d5ad..5be6d3c 100644
--- a/composer.json
+++ b/composer.json
@@ -12,11 +12,11 @@
         }
     ],
     "require": {
-        "php": ">=7.1.0",
+        "php": ">=5.6.0",
         "guzzlehttp/guzzle": ">=6.0.0"
     },
     "require-dev": {
-        "phpunit/phpunit": ">=7.0.0"
+        "phpunit/phpunit": ">=4.0.0 <5.0.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/FlaptasticListener.php b/src/FlaptasticListener.php
index fd685b6..0274d79 100644
--- a/src/FlaptasticListener.php
+++ b/src/FlaptasticListener.php
@@ -2,13 +2,10 @@
 
 namespace BlockJon\PHPUnit\Listener;
 
-use PHPUnit\Framework\TestListener;
-
-
 /**
  * Integrates with flaptastic.com to expose flappy test information.
  */
-class FlaptasticListener implements TestListener
+class FlaptasticListener implements \PHPUnit_Framework_TestListener
 {
     public static $FLAPTASTIC_INTRODUCED = false;
 
@@ -37,6 +34,15 @@ function __construct() {
     }
 
     public function getTestFailureFileAndLine($e) {
+        if (is_subclass_of($e, '\PHPUnit_Framework_Exception')) {
+            $result = explode(":", trim(\PHPUnit_Util_Filter::getFilteredStacktrace($e)));
+            if (count($result) == 2) {
+                return (object) [
+                    "file" => $result[0],
+                    "line" => $result[1]
+                ];
+            }
+        }
         return (object) [
             "file" => $e->getFile(),
             "line" => $e->getLine()
@@ -160,47 +166,47 @@ private function missingEnvVarsDetected() {
         return false;
     }
 
-    public function addError(\PHPUnit\Framework\Test $test, \Throwable $e, float $time): void
+    public function addError(\PHPUnit_Framework_Test $test, Exception $e, $time)
     {
         $this->testType = 'error';
         $this->testException = $e;
     }
 
-    public function addWarning(\PHPUnit\Framework\Test $test, \PHPUnit\Framework\Warning $e, float $time): void
+    public function addWarning(\PHPUnit_Framework_Test $test, \PHPUnit_Framework_Warning $e, $time)
     {
         $this->testType = 'warning';
     }
 
-    public function addFailure(\PHPUnit\Framework\Test $test, \PHPUnit\Framework\AssertionFailedError $e, float $time): void
+    public function addFailure(\PHPUnit_Framework_Test $test, \PHPUnit_Framework_AssertionFailedError $e, $time)
     {
         $this->testType = 'failure';
         $this->testException = $e;
     }
 
-    public function addIncompleteTest(\PHPUnit\Framework\Test $test, \Throwable $e, float $time): void
+    public function addIncompleteTest(\PHPUnit_Framework_Test $test, Exception $e, $time)
     {
         // We are not interested in incomplete tests and they are ultimately ignored.
         $this->testType = 'incomplete';
     }
 
-    public function addRiskyTest(\PHPUnit\Framework\Test $test, \Throwable $e, float $time): void
+    public function addRiskyTest(\PHPUnit_Framework_Test $test, Exception $e, $time)
     {
         // We dont care if php happens to deem a test is risky.
     }
 
-    public function addSkippedTest(\PHPUnit\Framework\Test $test, \Throwable $e, float $time): void
+    public function addSkippedTest(\PHPUnit_Framework_Test $test, Exception $e, $time)
     {
         $this->testType = 'skipped';
     }
 
-    public function startTest(\PHPUnit\Framework\Test $test): void
+    public function startTest(\PHPUnit_Framework_Test $test)
     {
         // Assume tests all pass.
         $this->testType = 'passed';
         $this->testException = null;
     }
 
-    public function endTest(\PHPUnit\Framework\Test $test, float $time): void
+    public function endTest(\PHPUnit_Framework_Test $test, $time)
     {
         if ($this->testType == 'passed') {
             $this->addPassedTest($test);
@@ -209,7 +215,7 @@ public function endTest(\PHPUnit\Framework\Test $test, float $time): void
         }
     }
 
-    public function startTestSuite(\PHPUnit\Framework\TestSuite $suite): void
+    public function startTestSuite(\PHPUnit_Framework_TestSuite $suite)
     {
         $this->testSuite = $suite;
         if (!static::$FLAPTASTIC_INTRODUCED) {
@@ -228,7 +234,7 @@ public function startTestSuite(\PHPUnit\Framework\TestSuite $suite): void
         }
     }
 
-    public function endTestSuite(\PHPUnit\Framework\TestSuite $suite): void
+    public function endTestSuite(\PHPUnit_Framework_TestSuite $suite)
     {
         if (count($this->buffer)) {
             $this->occasionallyDeliver();