diff --git a/infection.json5 b/infection.json5
index cbee8cb..22cb3c5 100644
--- a/infection.json5
+++ b/infection.json5
@@ -142,7 +142,11 @@
         "SpreadRemoval": true,
         "Ternary": true,
         "This": true,
-        "Throw_": true,
+        "Throw_": {
+            "ignore": [
+                "Nexus\\Encryption\\Key::__unserialize"
+            ]
+        },
         "TrueValue": {
             "ignore": [
                 "Nexus\\Collection\\Collection::generateDiffHashTable"
diff --git a/tools/src/InfectionConfigBuilder.php b/tools/src/InfectionConfigBuilder.php
index f39f62e..e881e9f 100644
--- a/tools/src/InfectionConfigBuilder.php
+++ b/tools/src/InfectionConfigBuilder.php
@@ -16,6 +16,7 @@
 use Infection\Mutator\ProfileList;
 use Nexus\Clock\SystemClock;
 use Nexus\Collection\Collection;
+use Nexus\Encryption\Key;
 use Nexus\Password\Hash\Pbkdf2Hash;
 use Nexus\Password\Hash\SodiumHash;
 
@@ -83,6 +84,9 @@ final class InfectionConfigBuilder
         'ModEqual' => [
             SystemClock::class,
         ],
+        'Throw_' => [
+            Key::class.'::__unserialize',
+        ],
         'TrueValue' => [
             Collection::class.'::generateDiffHashTable',
         ],