diff --git a/test/Mustache/Test/Cache/AbstractCacheTest.php b/test/Mustache/Test/Cache/AbstractCacheTest.php
index 090827d8..3ed88de0 100644
--- a/test/Mustache/Test/Cache/AbstractCacheTest.php
+++ b/test/Mustache/Test/Cache/AbstractCacheTest.php
@@ -21,7 +21,7 @@ public function testGetSetLogger()
 
     public function testSetLoggerThrowsExceptions()
     {
-	    $this->expectException(Mustache_Exception_InvalidArgumentException::class);
+        $this->expectException(Mustache_Exception_InvalidArgumentException::class);
         $cache  = new CacheStub();
         $logger = new StdClass();
         $cache->setLogger($logger);
diff --git a/test/Mustache/Test/CompilerTest.php b/test/Mustache/Test/CompilerTest.php
index b918d491..39c00328 100644
--- a/test/Mustache/Test/CompilerTest.php
+++ b/test/Mustache/Test/CompilerTest.php
@@ -134,7 +134,7 @@ public function getCompileValues()
 
     public function testCompilerThrowsSyntaxException()
     {
-	    $this->expectException(Mustache_Exception_SyntaxException::class);
+        $this->expectException(Mustache_Exception_SyntaxException::class);
         $compiler = new Mustache_Compiler();
         $compiler->compile('', array(array(Mustache_Tokenizer::TYPE => 'invalid')), 'SomeClass');
     }
diff --git a/test/Mustache/Test/ContextTest.php b/test/Mustache/Test/ContextTest.php
index 0c45bb6b..0e44ba6c 100644
--- a/test/Mustache/Test/ContextTest.php
+++ b/test/Mustache/Test/ContextTest.php
@@ -173,7 +173,7 @@ public function testAnchoredDotNotation()
 
     public function testAnchoredDotNotationThrowsExceptions()
     {
-	    $this->expectException(Mustache_Exception_InvalidArgumentException::class);
+        $this->expectException(Mustache_Exception_InvalidArgumentException::class);
         $context = new Mustache_Context();
         $context->push(array('a' => 1));
         $context->findAnchoredDot('a');
@@ -262,7 +262,7 @@ public function __construct($array)
         }
     }
 
-	#[\ReturnTypeWillChange]
+    #[\ReturnTypeWillChange]
     public function offsetSet($offset, $value)
     {
         if (is_null($offset)) {
@@ -272,19 +272,19 @@ public function offsetSet($offset, $value)
         }
     }
 
-	#[\ReturnTypeWillChange]
+    #[\ReturnTypeWillChange]
     public function offsetExists($offset)
     {
         return isset($this->container[$offset]);
     }
 
-	#[\ReturnTypeWillChange]
+    #[\ReturnTypeWillChange]
     public function offsetUnset($offset)
     {
         unset($this->container[$offset]);
     }
 
-	#[\ReturnTypeWillChange]
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         return isset($this->container[$offset]) ? $this->container[$offset] : null;
@@ -302,13 +302,13 @@ public function foo()
         return 'win';
     }
 
-	#[\ReturnTypeWillChange]
+    #[\ReturnTypeWillChange]
     public function offsetExists($offset)
     {
         return true;
     }
 
-	#[\ReturnTypeWillChange]
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         switch ($offset) {
@@ -325,13 +325,13 @@ public function offsetGet($offset)
         }
     }
 
-	#[\ReturnTypeWillChange]
+    #[\ReturnTypeWillChange]
     public function offsetSet($offset, $value)
     {
         // nada
     }
 
-	#[\ReturnTypeWillChange]
+    #[\ReturnTypeWillChange]
     public function offsetUnset($offset)
     {
         // nada
diff --git a/test/Mustache/Test/EngineTest.php b/test/Mustache/Test/EngineTest.php
index be0bb8e0..6b97ecdf 100644
--- a/test/Mustache/Test/EngineTest.php
+++ b/test/Mustache/Test/EngineTest.php
@@ -160,7 +160,7 @@ public function testWithoutLambdaCache()
 
     public function testEmptyTemplatePrefixThrowsException()
     {
-	    $this->expectException(Mustache_Exception_InvalidArgumentException::class);
+        $this->expectException(Mustache_Exception_InvalidArgumentException::class);
         new Mustache_Engine(array(
             'template_class_prefix' => '',
         ));
@@ -171,7 +171,7 @@ public function testEmptyTemplatePrefixThrowsException()
      */
     public function testNonCallableEscapeThrowsException($escape)
     {
-	    $this->expectException(Mustache_Exception_InvalidArgumentException::class);
+        $this->expectException(Mustache_Exception_InvalidArgumentException::class);
         new Mustache_Engine(array('escape' => $escape));
     }
 
@@ -185,7 +185,7 @@ public function getBadEscapers()
 
     public function testImmutablePartialsLoadersThrowException()
     {
-	    $this->expectException(Mustache_Exception_RuntimeException::class);
+        $this->expectException(Mustache_Exception_RuntimeException::class);
         $mustache = new Mustache_Engine(array(
             'partials_loader' => new Mustache_Loader_StringLoader(),
         ));
@@ -248,14 +248,14 @@ public static function wrapWithUnderscores($text)
 
     public function testSetHelpersThrowsExceptions()
     {
-	    $this->expectException(Mustache_Exception_InvalidArgumentException::class);
+        $this->expectException(Mustache_Exception_InvalidArgumentException::class);
         $mustache = new Mustache_Engine();
         $mustache->setHelpers('monkeymonkeymonkey');
     }
 
     public function testSetLoggerThrowsExceptions()
     {
-	    $this->expectException(Mustache_Exception_InvalidArgumentException::class);
+        $this->expectException(Mustache_Exception_InvalidArgumentException::class);
         $mustache = new Mustache_Engine();
         $mustache->setLogger(new StdClass());
     }
@@ -325,7 +325,7 @@ public function testVerboseLoggingIsVerbose()
 
     public function testUnknownPragmaThrowsException()
     {
-	    $this->expectException(Mustache_Exception_InvalidArgumentException::class);
+        $this->expectException(Mustache_Exception_InvalidArgumentException::class);
         new Mustache_Engine(array(
             'pragmas' => array('UNKNOWN'),
         ));
diff --git a/test/Mustache/Test/FiveThree/Functional/FiltersTest.php b/test/Mustache/Test/FiveThree/Functional/FiltersTest.php
index 0372c53b..04b10211 100644
--- a/test/Mustache/Test/FiveThree/Functional/FiltersTest.php
+++ b/test/Mustache/Test/FiveThree/Functional/FiltersTest.php
@@ -132,7 +132,7 @@ public function interpolateFirstData()
      */
     public function testThrowsExceptionForBrokenPipes($tpl, $data)
     {
-	    $this->expectException(Mustache_Exception_UnknownFilterException::class);
+        $this->expectException(Mustache_Exception_UnknownFilterException::class);
         $this->mustache->render($tpl, $data);
     }
 
diff --git a/test/Mustache/Test/Functional/DynamicPartialsTest.php b/test/Mustache/Test/Functional/DynamicPartialsTest.php
index 2ee4f488..1493a363 100644
--- a/test/Mustache/Test/Functional/DynamicPartialsTest.php
+++ b/test/Mustache/Test/Functional/DynamicPartialsTest.php
@@ -61,8 +61,8 @@ public function getDynamicNameParseErrors()
      */
     public function testDynamicNameParseErrors($template)
     {
-		$this->expectException(Mustache_Exception_SyntaxException::class);
-		$this->expectExceptionMessage('Nesting error:');
+        $this->expectException(Mustache_Exception_SyntaxException::class);
+        $this->expectExceptionMessage('Nesting error:');
         $this->mustache->render($template);
     }
 
diff --git a/test/Mustache/Test/Functional/HigherOrderSectionsTest.php b/test/Mustache/Test/Functional/HigherOrderSectionsTest.php
index d652a9be..7aee6c11 100644
--- a/test/Mustache/Test/Functional/HigherOrderSectionsTest.php
+++ b/test/Mustache/Test/Functional/HigherOrderSectionsTest.php
@@ -76,11 +76,11 @@ public function testMonsters()
     public function testPassthroughOptimization()
     {
         $mustache = $this->getMockBuilder('Mustache_Engine');
-		if (method_exists($mustache, 'onlyMethods')) {
-			$mustache->onlyMethods(array('loadLambda'));
-		} else {
-			$mustache->setMethods(array('loadLambda'));
-		}
+        if (method_exists($mustache, 'onlyMethods')) {
+            $mustache->onlyMethods(array('loadLambda'));
+        } else {
+            $mustache->setMethods(array('loadLambda'));
+        }
         $mustache = $mustache->getMock();
 
         $mustache->expects($this->never())
@@ -98,9 +98,9 @@ public function testWithoutPassthroughOptimization()
     {
         $mustache = $this->getMockBuilder('Mustache_Engine');
         if (method_exists($mustache, 'onlyMethods')) {
-	        $mustache->onlyMethods(array('loadLambda'));
+            $mustache->onlyMethods(array('loadLambda'));
         } else {
-	        $mustache->setMethods(array('loadLambda'));
+            $mustache->setMethods(array('loadLambda'));
         }
         $mustache = $mustache->getMock();
 
diff --git a/test/Mustache/Test/Functional/InheritanceTest.php b/test/Mustache/Test/Functional/InheritanceTest.php
index c0e4756e..1e38eb39 100644
--- a/test/Mustache/Test/Functional/InheritanceTest.php
+++ b/test/Mustache/Test/Functional/InheritanceTest.php
@@ -524,8 +524,8 @@ public function testInheritanceWithLazyEvaluationAndSections()
      */
     public function testIllegalInheritanceExamples($partials, $data, $template)
     {
-	    $this->expectException(Mustache_Exception_SyntaxException::class);
-	    $this->expectExceptionMessage('Illegal content in < parent tag');
+        $this->expectException(Mustache_Exception_SyntaxException::class);
+        $this->expectExceptionMessage('Illegal content in < parent tag');
         $this->mustache->setPartials($partials);
         $tpl = $this->mustache->loadTemplate($template);
         $tpl->render($data);
diff --git a/test/Mustache/Test/HelperCollectionTest.php b/test/Mustache/Test/HelperCollectionTest.php
index fe0240c6..466be491 100644
--- a/test/Mustache/Test/HelperCollectionTest.php
+++ b/test/Mustache/Test/HelperCollectionTest.php
@@ -97,7 +97,7 @@ public function testMagicMethods()
     public function testHelperCollectionIsntAfraidToThrowExceptions($helpers = array(), $actions = array(), $exception = null)
     {
         if ($exception) {
-			$this->expectException($exception);
+            $this->expectException($exception);
         }
 
         $helpers = new Mustache_HelperCollection($helpers);
diff --git a/test/Mustache/Test/Loader/ArrayLoaderTest.php b/test/Mustache/Test/Loader/ArrayLoaderTest.php
index 095236f6..a9b1875e 100644
--- a/test/Mustache/Test/Loader/ArrayLoaderTest.php
+++ b/test/Mustache/Test/Loader/ArrayLoaderTest.php
@@ -43,7 +43,7 @@ public function testSetAndLoadTemplates()
 
     public function testMissingTemplatesThrowExceptions()
     {
-	    $this->expectException(Mustache_Exception_UnknownTemplateException::class);
+        $this->expectException(Mustache_Exception_UnknownTemplateException::class);
         $loader = new Mustache_Loader_ArrayLoader();
         $loader->load('not_a_real_template');
     }
diff --git a/test/Mustache/Test/Loader/CascadingLoaderTest.php b/test/Mustache/Test/Loader/CascadingLoaderTest.php
index 9ae13cff..8cee6b79 100644
--- a/test/Mustache/Test/Loader/CascadingLoaderTest.php
+++ b/test/Mustache/Test/Loader/CascadingLoaderTest.php
@@ -27,7 +27,7 @@ public function testLoadTemplates()
 
     public function testMissingTemplatesThrowExceptions()
     {
-	    $this->expectException(Mustache_Exception_UnknownTemplateException::class);
+        $this->expectException(Mustache_Exception_UnknownTemplateException::class);
         $loader = new Mustache_Loader_CascadingLoader(array(
             new Mustache_Loader_ArrayLoader(array('foo' => '{{ foo }}')),
             new Mustache_Loader_ArrayLoader(array('bar' => '{{#bar}}BAR{{/bar}}')),
diff --git a/test/Mustache/Test/Loader/FilesystemLoaderTest.php b/test/Mustache/Test/Loader/FilesystemLoaderTest.php
index a40187cc..617a8372 100644
--- a/test/Mustache/Test/Loader/FilesystemLoaderTest.php
+++ b/test/Mustache/Test/Loader/FilesystemLoaderTest.php
@@ -61,13 +61,13 @@ public function testEmptyExtensionString()
 
     public function testMissingBaseDirThrowsException()
     {
-	    $this->expectException(Mustache_Exception_RuntimeException::class);
+        $this->expectException(Mustache_Exception_RuntimeException::class);
         new Mustache_Loader_FilesystemLoader(dirname(__FILE__) . '/not_a_directory');
     }
 
     public function testMissingTemplateThrowsException()
     {
-	    $this->expectException(Mustache_Exception_UnknownTemplateException::class);
+        $this->expectException(Mustache_Exception_UnknownTemplateException::class);
         $baseDir = realpath(dirname(__FILE__) . '/../../../fixtures/templates');
         $loader = new Mustache_Loader_FilesystemLoader($baseDir);
 
diff --git a/test/Mustache/Test/Loader/InlineLoaderTest.php b/test/Mustache/Test/Loader/InlineLoaderTest.php
index 07ce5a93..90255ced 100644
--- a/test/Mustache/Test/Loader/InlineLoaderTest.php
+++ b/test/Mustache/Test/Loader/InlineLoaderTest.php
@@ -23,20 +23,20 @@ public function testLoadTemplates()
 
     public function testMissingTemplatesThrowExceptions()
     {
-	    $this->expectException(Mustache_Exception_UnknownTemplateException::class);
+        $this->expectException(Mustache_Exception_UnknownTemplateException::class);
         $loader = new Mustache_Loader_InlineLoader(__FILE__, __COMPILER_HALT_OFFSET__);
         $loader->load('not_a_real_template');
     }
 
     public function testInvalidOffsetThrowsException()
     {
-	    $this->expectException(Mustache_Exception_InvalidArgumentException::class);
+        $this->expectException(Mustache_Exception_InvalidArgumentException::class);
         new Mustache_Loader_InlineLoader(__FILE__, 'notanumber');
     }
 
     public function testInvalidFileThrowsException()
     {
-	    $this->expectException(Mustache_Exception_InvalidArgumentException::class);
+        $this->expectException(Mustache_Exception_InvalidArgumentException::class);
         new Mustache_Loader_InlineLoader('notarealfile', __COMPILER_HALT_OFFSET__);
     }
 }
diff --git a/test/Mustache/Test/Loader/ProductionFilesystemLoaderTest.php b/test/Mustache/Test/Loader/ProductionFilesystemLoaderTest.php
index 6e50a1a1..f0eeeb70 100644
--- a/test/Mustache/Test/Loader/ProductionFilesystemLoaderTest.php
+++ b/test/Mustache/Test/Loader/ProductionFilesystemLoaderTest.php
@@ -63,13 +63,13 @@ public function testEmptyExtensionString()
 
     public function testMissingBaseDirThrowsException()
     {
-	    $this->expectException(Mustache_Exception_RuntimeException::class);
+        $this->expectException(Mustache_Exception_RuntimeException::class);
         new Mustache_Loader_ProductionFilesystemLoader(dirname(__FILE__) . '/not_a_directory');
     }
 
     public function testMissingTemplateThrowsException()
     {
-	    $this->expectException(Mustache_Exception_UnknownTemplateException::class);
+        $this->expectException(Mustache_Exception_UnknownTemplateException::class);
         $baseDir = realpath(dirname(__FILE__) . '/../../../fixtures/templates');
         $loader = new Mustache_Loader_ProductionFilesystemLoader($baseDir);
 
diff --git a/test/Mustache/Test/Logger/StreamLoggerTest.php b/test/Mustache/Test/Logger/StreamLoggerTest.php
index 2404096e..5ccd90f4 100644
--- a/test/Mustache/Test/Logger/StreamLoggerTest.php
+++ b/test/Mustache/Test/Logger/StreamLoggerTest.php
@@ -38,7 +38,7 @@ public function acceptsStreamData()
 
     public function testPrematurelyClosedStreamThrowsException()
     {
-	    $this->expectException(Mustache_Exception_LogicException::class);
+        $this->expectException(Mustache_Exception_LogicException::class);
         $stream = tmpfile();
         $logger = new Mustache_Logger_StreamLogger($stream);
         fclose($stream);
@@ -189,14 +189,14 @@ public function testChangeLoggingLevels()
 
     public function testThrowsInvalidArgumentExceptionWhenSettingUnknownLevels()
     {
-	    $this->expectException(Mustache_Exception_InvalidArgumentException::class);
+        $this->expectException(Mustache_Exception_InvalidArgumentException::class);
         $logger = new Mustache_Logger_StreamLogger(tmpfile());
         $logger->setLevel('bacon');
     }
 
     public function testThrowsInvalidArgumentExceptionWhenLoggingUnknownLevels()
     {
-	    $this->expectException(Mustache_Exception_InvalidArgumentException::class);
+        $this->expectException(Mustache_Exception_InvalidArgumentException::class);
         $logger = new Mustache_Logger_StreamLogger(tmpfile());
         $logger->log('bacon', 'CODE BACON ERROR!');
     }
diff --git a/test/Mustache/Test/ParserTest.php b/test/Mustache/Test/ParserTest.php
index 2b780fb5..b73bc044 100644
--- a/test/Mustache/Test/ParserTest.php
+++ b/test/Mustache/Test/ParserTest.php
@@ -320,7 +320,7 @@ public function getInheritanceTokenSets()
      */
     public function testParserThrowsExceptions($tokens)
     {
-	    $this->expectException(Mustache_Exception_SyntaxException::class);
+        $this->expectException(Mustache_Exception_SyntaxException::class);
         $parser = new Mustache_Parser();
         $parser->parse($tokens);
     }
diff --git a/test/Mustache/Test/Source/FilesystemSourceTest.php b/test/Mustache/Test/Source/FilesystemSourceTest.php
index 09fa1aaf..3f8f7327 100644
--- a/test/Mustache/Test/Source/FilesystemSourceTest.php
+++ b/test/Mustache/Test/Source/FilesystemSourceTest.php
@@ -16,7 +16,7 @@ class Mustache_Test_Source_FilesystemSourceTest extends Yoast\PHPUnitPolyfills\T
 {
     public function testMissingTemplateThrowsException()
     {
-	    $this->expectException(Mustache_Exception_RuntimeException::class);
+        $this->expectException(Mustache_Exception_RuntimeException::class);
         $source = new Mustache_Source_FilesystemSource(dirname(__FILE__) . '/not_a_file.mustache', array('mtime'));
         $source->getKey();
     }
diff --git a/test/Mustache/Test/TokenizerTest.php b/test/Mustache/Test/TokenizerTest.php
index 021393fd..8180de7e 100644
--- a/test/Mustache/Test/TokenizerTest.php
+++ b/test/Mustache/Test/TokenizerTest.php
@@ -25,7 +25,7 @@ public function testScan($text, $delimiters, $expected)
 
     public function testUnevenBracesThrowExceptions()
     {
-	    $this->expectException(Mustache_Exception_SyntaxException::class);
+        $this->expectException(Mustache_Exception_SyntaxException::class);
         $tokenizer = new Mustache_Tokenizer();
 
         $text = '{{{ name }}';
@@ -34,7 +34,7 @@ public function testUnevenBracesThrowExceptions()
 
     public function testUnevenBracesWithCustomDelimiterThrowExceptions()
     {
-	    $this->expectException(Mustache_Exception_SyntaxException::class);
+        $this->expectException(Mustache_Exception_SyntaxException::class);
         $tokenizer = new Mustache_Tokenizer();
 
         $text = '<%{ name %>';
@@ -353,7 +353,7 @@ public function getTokens()
      */
     public function testUnclosedTagsThrowExceptions($text)
     {
-	    $this->expectException(Mustache_Exception_SyntaxException::class);
+        $this->expectException(Mustache_Exception_SyntaxException::class);
         $tokenizer = new Mustache_Tokenizer();
         $tokenizer->scan($text, null);
     }