diff --git a/src/Stubs/4/Component/HttpFoundation/ParameterBag.stubphp b/src/Stubs/4/Component/HttpFoundation/ParameterBag.stubphp
index 83ec59c..0f7462b 100644
--- a/src/Stubs/4/Component/HttpFoundation/ParameterBag.stubphp
+++ b/src/Stubs/4/Component/HttpFoundation/ParameterBag.stubphp
@@ -12,6 +12,7 @@ class ParameterBag implements \IteratorAggregate, \Countable
      *
      * @return mixed
      * @psalm-taint-source input
+     * @psalm-mutation-free
      */
     public function get(string $key, $default = null) {}
 
@@ -19,6 +20,9 @@ class ParameterBag implements \IteratorAggregate, \Countable
      * Returns the parameters.
      *
      * @return array An array of parameters
+
+     * @psalm-taint-source input
+     * @psalm-mutation-free
      */
     public function all() {}
 }
diff --git a/src/Stubs/5/Component/HttpFoundation/InputBag.stubphp b/src/Stubs/5/Component/HttpFoundation/InputBag.stubphp
index 48a25fa..b52d267 100644
--- a/src/Stubs/5/Component/HttpFoundation/InputBag.stubphp
+++ b/src/Stubs/5/Component/HttpFoundation/InputBag.stubphp
@@ -14,6 +14,7 @@ final class InputBag extends ParameterBag
      * @psalm-param D $default
      * @psalm-return D|T
      * @psalm-taint-source input
+     * @psalm-mutation-free
      */
     public function get(string $key, $default = null) {}
 
@@ -25,6 +26,7 @@ final class InputBag extends ParameterBag
      * @return array An array of parameters
      *
      * @psalm-taint-source input
+     * @psalm-mutation-free
      */
     public function all(string $key = null) {}
 }
diff --git a/src/Stubs/5/Component/HttpFoundation/ParameterBag.stubphp b/src/Stubs/5/Component/HttpFoundation/ParameterBag.stubphp
index 4c5e8bd..48920cc 100644
--- a/src/Stubs/5/Component/HttpFoundation/ParameterBag.stubphp
+++ b/src/Stubs/5/Component/HttpFoundation/ParameterBag.stubphp
@@ -12,6 +12,7 @@ class ParameterBag implements \IteratorAggregate, \Countable
      *
      * @return mixed
      * @psalm-taint-source input
+     * @psalm-mutation-free
      */
     public function get(string $key, $default = null) {}
 
@@ -23,6 +24,7 @@ class ParameterBag implements \IteratorAggregate, \Countable
      * @return array An array of parameters
      *
      * @psalm-taint-source input
+     * @psalm-mutation-free
      */
     public function all(string $key = null) {}
 }
diff --git a/src/Stubs/6/Component/HttpFoundation/InputBag.stubphp b/src/Stubs/6/Component/HttpFoundation/InputBag.stubphp
index 48a25fa..b52d267 100644
--- a/src/Stubs/6/Component/HttpFoundation/InputBag.stubphp
+++ b/src/Stubs/6/Component/HttpFoundation/InputBag.stubphp
@@ -14,6 +14,7 @@ final class InputBag extends ParameterBag
      * @psalm-param D $default
      * @psalm-return D|T
      * @psalm-taint-source input
+     * @psalm-mutation-free
      */
     public function get(string $key, $default = null) {}
 
@@ -25,6 +26,7 @@ final class InputBag extends ParameterBag
      * @return array An array of parameters
      *
      * @psalm-taint-source input
+     * @psalm-mutation-free
      */
     public function all(string $key = null) {}
 }
diff --git a/src/Stubs/6/Component/HttpFoundation/ParameterBag.stubphp b/src/Stubs/6/Component/HttpFoundation/ParameterBag.stubphp
index 4c5e8bd..48920cc 100644
--- a/src/Stubs/6/Component/HttpFoundation/ParameterBag.stubphp
+++ b/src/Stubs/6/Component/HttpFoundation/ParameterBag.stubphp
@@ -12,6 +12,7 @@ class ParameterBag implements \IteratorAggregate, \Countable
      *
      * @return mixed
      * @psalm-taint-source input
+     * @psalm-mutation-free
      */
     public function get(string $key, $default = null) {}
 
@@ -23,6 +24,7 @@ class ParameterBag implements \IteratorAggregate, \Countable
      * @return array An array of parameters
      *
      * @psalm-taint-source input
+     * @psalm-mutation-free
      */
     public function all(string $key = null) {}
 }
diff --git a/src/Stubs/common/Component/HttpFoundation/Request.stubphp b/src/Stubs/common/Component/HttpFoundation/Request.stubphp
index fb8ce15..e0664ae 100644
--- a/src/Stubs/common/Component/HttpFoundation/Request.stubphp
+++ b/src/Stubs/common/Component/HttpFoundation/Request.stubphp
@@ -26,6 +26,7 @@ class Request
      * @param mixed  $default The default value if the parameter key does not exist
      *
      * @psalm-taint-source input
+     * @psalm-mutation-free
      */
     public function get($key, $default = null) {}
 }