diff --git a/src/MissingFieldException.php b/src/MissingFieldException.php
index 915f1dc..ab87967 100644
--- a/src/MissingFieldException.php
+++ b/src/MissingFieldException.php
@@ -2,18 +2,19 @@
 
 namespace Swaggest\JsonDiff;
 
+use Swaggest\JsonDiff\JsonPatch\OpPath;
 use Throwable;
 
 class MissingFieldException extends Exception
 {
     /** @var string */
     private $missingField;
-    /** @var object */
+    /** @var OpPath|object */
     private $operation;
 
     /**
      * @param string $missingField
-     * @param object $operation
+     * @param OpPath|object $operation
      * @param int $code
      * @param Throwable|null $previous
      */
@@ -38,7 +39,7 @@ public function getMissingField()
     }
 
     /**
-     * @return object
+     * @return OpPath|object
      */
     public function getOperation()
     {
diff --git a/src/PatchTestOperationFailedException.php b/src/PatchTestOperationFailedException.php
index c2ded02..7204b7c 100644
--- a/src/PatchTestOperationFailedException.php
+++ b/src/PatchTestOperationFailedException.php
@@ -3,18 +3,19 @@
 namespace Swaggest\JsonDiff;
 
 
+use Swaggest\JsonDiff\JsonPatch\Test;
 use Throwable;
 
 class PatchTestOperationFailedException extends Exception
 {
-    /** @var object */
+    /** @var Test */
     private $operation;
-    /** @var string */
+    /** @var mixed */
     private $actualValue;
 
     /**
-     * @param object $operation
-     * @param string $actualValue
+     * @param Test $operation
+     * @param mixed $actualValue
      * @param int $code
      * @param Throwable|null $previous
      */
@@ -32,7 +33,7 @@ public function __construct(
     }
 
     /**
-     * @return object
+     * @return Test
      */
     public function getOperation()
     {
@@ -40,7 +41,7 @@ public function getOperation()
     }
 
     /**
-     * @return string
+     * @return mixed
      */
     public function getActualValue()
     {
diff --git a/src/PathException.php b/src/PathException.php
index c96f83f..6ccbe91 100644
--- a/src/PathException.php
+++ b/src/PathException.php
@@ -3,11 +3,12 @@
 namespace Swaggest\JsonDiff;
 
 
+use Swaggest\JsonDiff\JsonPatch\OpPath;
 use Throwable;
 
 class PathException extends Exception
 {
-    /** @var object */
+    /** @var OpPath */
     private $operation;
 
     /** @var string */
@@ -15,7 +16,7 @@ class PathException extends Exception
 
     /**
      * @param string $message
-     * @param object $operation
+     * @param OpPath $operation
      * @param string $field
      * @param int $code
      * @param Throwable|null $previous
@@ -34,7 +35,7 @@ public function __construct(
     }
 
     /**
-     * @return object
+     * @return OpPath
      */
     public function getOperation()
     {
diff --git a/src/UnknownOperationException.php b/src/UnknownOperationException.php
index 0855bb2..8d35abb 100644
--- a/src/UnknownOperationException.php
+++ b/src/UnknownOperationException.php
@@ -3,15 +3,16 @@
 namespace Swaggest\JsonDiff;
 
 
+use Swaggest\JsonDiff\JsonPatch\OpPath;
 use Throwable;
 
 class UnknownOperationException extends Exception
 {
-    /** @var object */
+    /** @var OpPath|object */
     private $operation;
 
     /**
-     * @param object $operation
+     * @param OpPath|object $operation
      * @param int $code
      * @param Throwable|null $previous
      */
@@ -27,7 +28,7 @@ public function __construct(
     }
 
     /**
-     * @return object
+     * @return OpPath|object
      */
     public function getOperation()
     {