diff --git a/system/src/Grav/Common/Twig/Node/TwigNodeCache.php b/system/src/Grav/Common/Twig/Node/TwigNodeCache.php
index a4ca5e0c8..930e597c1 100644
--- a/system/src/Grav/Common/Twig/Node/TwigNodeCache.php
+++ b/system/src/Grav/Common/Twig/Node/TwigNodeCache.php
@@ -33,7 +33,7 @@ class TwigNodeCache extends Node
     /**
      * {@inheritDoc}
      */
-    public function compile(Compiler $compiler)
+    public function compile(Compiler $compiler): void
     {
         $boo = $this->getAttribute('key');
         $compiler
diff --git a/system/src/Grav/Common/Twig/Node/TwigNodeMarkdown.php b/system/src/Grav/Common/Twig/Node/TwigNodeMarkdown.php
index 6539ab422..93504c7b5 100644
--- a/system/src/Grav/Common/Twig/Node/TwigNodeMarkdown.php
+++ b/system/src/Grav/Common/Twig/Node/TwigNodeMarkdown.php
@@ -36,7 +36,7 @@ class TwigNodeMarkdown extends Node implements NodeOutputInterface
      * @param Compiler $compiler A Twig Compiler instance
      * @return void
      */
-    public function compile(Compiler $compiler)
+    public function compile(Compiler $compiler): void
     {
         $compiler
             ->addDebugInfo($this)
diff --git a/system/src/Grav/Common/Twig/Node/TwigNodeRender.php b/system/src/Grav/Common/Twig/Node/TwigNodeRender.php
index e5b815366..38f67e446 100644
--- a/system/src/Grav/Common/Twig/Node/TwigNodeRender.php
+++ b/system/src/Grav/Common/Twig/Node/TwigNodeRender.php
@@ -46,7 +46,7 @@ class TwigNodeRender extends Node implements NodeCaptureInterface
      * @return void
      * @throws LogicException
      */
-    public function compile(Compiler $compiler)
+    public function compile(Compiler $compiler): void
     {
         $compiler->addDebugInfo($this);
         $compiler->write('$object = ')->subcompile($this->getNode('object'))->raw(';' . PHP_EOL);
diff --git a/system/src/Grav/Common/Twig/Node/TwigNodeScript.php b/system/src/Grav/Common/Twig/Node/TwigNodeScript.php
index cf77a7623..60bb3cf21 100644
--- a/system/src/Grav/Common/Twig/Node/TwigNodeScript.php
+++ b/system/src/Grav/Common/Twig/Node/TwigNodeScript.php
@@ -49,7 +49,7 @@ class TwigNodeScript extends Node implements NodeCaptureInterface
      * @return void
      * @throws LogicException
      */
-    public function compile(Compiler $compiler)
+    public function compile(Compiler $compiler): void
     {
         $compiler->addDebugInfo($this);
 
diff --git a/system/src/Grav/Common/Twig/Node/TwigNodeStyle.php b/system/src/Grav/Common/Twig/Node/TwigNodeStyle.php
index 4180279a4..87c80dde9 100644
--- a/system/src/Grav/Common/Twig/Node/TwigNodeStyle.php
+++ b/system/src/Grav/Common/Twig/Node/TwigNodeStyle.php
@@ -48,7 +48,7 @@ class TwigNodeStyle extends Node implements NodeCaptureInterface
      * @return void
      * @throws LogicException
      */
-    public function compile(Compiler $compiler)
+    public function compile(Compiler $compiler): void
     {
         $compiler->addDebugInfo($this);
 
diff --git a/system/src/Grav/Common/Twig/Node/TwigNodeSwitch.php b/system/src/Grav/Common/Twig/Node/TwigNodeSwitch.php
index 9745b90fa..535d01cdc 100644
--- a/system/src/Grav/Common/Twig/Node/TwigNodeSwitch.php
+++ b/system/src/Grav/Common/Twig/Node/TwigNodeSwitch.php
@@ -40,7 +40,7 @@ class TwigNodeSwitch extends Node
      * @param Compiler $compiler A Twig Compiler instance
      * @return void
      */
-    public function compile(Compiler $compiler)
+    public function compile(Compiler $compiler): void
     {
         $compiler
             ->addDebugInfo($this)
diff --git a/system/src/Grav/Common/Twig/Node/TwigNodeThrow.php b/system/src/Grav/Common/Twig/Node/TwigNodeThrow.php
index e54998a48..669af514c 100644
--- a/system/src/Grav/Common/Twig/Node/TwigNodeThrow.php
+++ b/system/src/Grav/Common/Twig/Node/TwigNodeThrow.php
@@ -38,7 +38,7 @@ class TwigNodeThrow extends Node
      * @return void
      * @throws LogicException
      */
-    public function compile(Compiler $compiler)
+    public function compile(Compiler $compiler): void
     {
         $compiler->addDebugInfo($this);
 
diff --git a/system/src/Grav/Common/Twig/Node/TwigNodeTryCatch.php b/system/src/Grav/Common/Twig/Node/TwigNodeTryCatch.php
index 21a285bac..f31a07ce8 100644
--- a/system/src/Grav/Common/Twig/Node/TwigNodeTryCatch.php
+++ b/system/src/Grav/Common/Twig/Node/TwigNodeTryCatch.php
@@ -41,7 +41,7 @@ class TwigNodeTryCatch extends Node
      * @return void
      * @throws LogicException
      */
-    public function compile(Compiler $compiler)
+    public function compile(Compiler $compiler): void
     {
         $compiler->addDebugInfo($this);
 
diff --git a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserCache.php b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserCache.php
index 2284152bc..bf00ce86d 100644
--- a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserCache.php
+++ b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserCache.php
@@ -57,14 +57,14 @@ class TwigTokenParserCache extends AbstractTokenParser
      * @param Token $token
      * @return bool
      */
-    public function decideCacheEnd(Token $token)
+    public function decideCacheEnd(Token $token): bool
     {
         return $token->test('endcache');
     }
     /**
      * {@inheritDoc}
      */
-    public function getTag()
+    public function getTag(): string
     {
         return 'cache';
     }
diff --git a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserMarkdown.php b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserMarkdown.php
index 2ee219c17..8533e87d3 100644
--- a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserMarkdown.php
+++ b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserMarkdown.php
@@ -45,14 +45,14 @@ class TwigTokenParserMarkdown extends AbstractTokenParser
      * @param Token $token
      * @return bool
      */
-    public function decideMarkdownEnd(Token $token)
+    public function decideMarkdownEnd(Token $token): bool
     {
         return $token->test('endmarkdown');
     }
     /**
      * {@inheritdoc}
      */
-    public function getTag()
+    public function getTag(): string
     {
         return 'markdown';
     }
diff --git a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserRender.php b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserRender.php
index 60570785f..b65126b7c 100644
--- a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserRender.php
+++ b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserRender.php
@@ -40,7 +40,7 @@ class TwigTokenParserRender extends AbstractTokenParser
      * @param Token $token
      * @return array
      */
-    protected function parseArguments(Token $token)
+    protected function parseArguments(Token $token): array
     {
         $stream = $this->parser->getStream();
 
@@ -67,7 +67,7 @@ class TwigTokenParserRender extends AbstractTokenParser
      *
      * @return string The tag name
      */
-    public function getTag()
+    public function getTag(): string
     {
         return 'render';
     }
diff --git a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserScript.php b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserScript.php
index 540842c50..aaf1f9218 100644
--- a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserScript.php
+++ b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserScript.php
@@ -53,7 +53,7 @@ class TwigTokenParserScript extends AbstractTokenParser
      * @param Token $token
      * @return array
      */
-    protected function parseArguments(Token $token)
+    protected function parseArguments(Token $token): array
     {
         $stream = $this->parser->getStream();
 
@@ -87,7 +87,7 @@ class TwigTokenParserScript extends AbstractTokenParser
      * @param Token $token
      * @return bool
      */
-    public function decideBlockEnd(Token $token)
+    public function decideBlockEnd(Token $token): bool
     {
         return $token->test('endscript');
     }
@@ -97,7 +97,7 @@ class TwigTokenParserScript extends AbstractTokenParser
      *
      * @return string The tag name
      */
-    public function getTag()
+    public function getTag(): string
     {
         return 'script';
     }
diff --git a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserStyle.php b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserStyle.php
index 23151be94..12447cc34 100644
--- a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserStyle.php
+++ b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserStyle.php
@@ -52,7 +52,7 @@ class TwigTokenParserStyle extends AbstractTokenParser
      * @param Token $token
      * @return array
      */
-    protected function parseArguments(Token $token)
+    protected function parseArguments(Token $token): array
     {
         $stream = $this->parser->getStream();
 
@@ -86,7 +86,7 @@ class TwigTokenParserStyle extends AbstractTokenParser
      * @param Token $token
      * @return bool
      */
-    public function decideBlockEnd(Token $token)
+    public function decideBlockEnd(Token $token): bool
     {
         return $token->test('endstyle');
     }
@@ -96,7 +96,7 @@ class TwigTokenParserStyle extends AbstractTokenParser
      *
      * @return string The tag name
      */
-    public function getTag()
+    public function getTag(): string
     {
         return 'style';
     }
diff --git a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserSwitch.php b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserSwitch.php
index 20cda59fb..24e555e36 100644
--- a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserSwitch.php
+++ b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserSwitch.php
@@ -106,7 +106,7 @@ class TwigTokenParserSwitch extends AbstractTokenParser
      * @param Token $token
      * @return bool
      */
-    public function decideIfFork(Token $token)
+    public function decideIfFork(Token $token): bool
     {
         return $token->test(['case', 'default', 'endswitch']);
     }
@@ -117,7 +117,7 @@ class TwigTokenParserSwitch extends AbstractTokenParser
      * @param Token $token
      * @return bool
      */
-    public function decideIfEnd(Token $token)
+    public function decideIfEnd(Token $token): bool
     {
         return $token->test(['endswitch']);
     }
@@ -125,7 +125,7 @@ class TwigTokenParserSwitch extends AbstractTokenParser
     /**
      * {@inheritdoc}
      */
-    public function getTag()
+    public function getTag(): string
     {
         return 'switch';
     }
diff --git a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserThrow.php b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserThrow.php
index a99879fbc..02fb7c8e2 100644
--- a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserThrow.php
+++ b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserThrow.php
@@ -48,7 +48,7 @@ class TwigTokenParserThrow extends AbstractTokenParser
      *
      * @return string The tag name
      */
-    public function getTag()
+    public function getTag(): string
     {
         return 'throw';
     }
diff --git a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserTryCatch.php b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserTryCatch.php
index 14bb82700..4cfab55b7 100644
--- a/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserTryCatch.php
+++ b/system/src/Grav/Common/Twig/TokenParser/TwigTokenParserTryCatch.php
@@ -55,7 +55,7 @@ class TwigTokenParserTryCatch extends AbstractTokenParser
      * @param Token $token
      * @return bool
      */
-    public function decideCatch(Token $token)
+    public function decideCatch(Token $token): bool
     {
         return $token->test(['catch']);
     }
@@ -64,7 +64,7 @@ class TwigTokenParserTryCatch extends AbstractTokenParser
      * @param Token $token
      * @return bool
      */
-    public function decideEnd(Token $token)
+    public function decideEnd(Token $token): bool
     {
         return $token->test(['endtry']) || $token->test(['endcatch']);
     }
@@ -74,7 +74,7 @@ class TwigTokenParserTryCatch extends AbstractTokenParser
      *
      * @return string The tag name
      */
-    public function getTag()
+    public function getTag(): string
     {
         return 'try';
     }