diff --git a/src/Directory.Packages.props b/src/Directory.Packages.props
index 08b8a16f3..e6f330f01 100644
--- a/src/Directory.Packages.props
+++ b/src/Directory.Packages.props
@@ -44,6 +44,6 @@
     <PackageVersion Include="Stryker.Regex.Parser" Version="1.0.0" />
     <PackageVersion Include="Shouldly" Version="4.2.1" />
     <PackageVersion Include="Spectre.Console.Testing" Version="0.49.1" />
-    <PackageVersion Include="TestableIO.System.IO.Abstractions.TestingHelpers" Version="21.1.7" />
+    <PackageVersion Include="TestableIO.System.IO.Abstractions.TestingHelpers" Version="21.2.1" />
   </ItemGroup>
 </Project>
diff --git a/src/Stryker.CLI/Stryker.CLI.UnitTest/packages.lock.json b/src/Stryker.CLI/Stryker.CLI.UnitTest/packages.lock.json
index 84b79d744..1b6bfac83 100644
--- a/src/Stryker.CLI/Stryker.CLI.UnitTest/packages.lock.json
+++ b/src/Stryker.CLI/Stryker.CLI.UnitTest/packages.lock.json
@@ -73,12 +73,12 @@
       },
       "TestableIO.System.IO.Abstractions.TestingHelpers": {
         "type": "Direct",
-        "requested": "[21.1.7, )",
-        "resolved": "21.1.7",
-        "contentHash": "2ul9Dpl7GF7OAQUZUWWqjU0tug5h+yMQXRhtcqeFm0oCPtbhMBaBczWu/majJoRAq3ZGbRmPj1+9zLmldjzA5w==",
+        "requested": "[21.2.1, )",
+        "resolved": "21.2.1",
+        "contentHash": "Rt8o05EmQjNJdo57NJchp8Yw6KNYs4mwfJRN7U7l925FAK5gBFXr/A7SB0KDLYwfzHzsGXNV1KxcmJlS3+usmA==",
         "dependencies": {
-          "TestableIO.System.IO.Abstractions": "21.1.7",
-          "TestableIO.System.IO.Abstractions.Wrappers": "21.1.7"
+          "TestableIO.System.IO.Abstractions": "21.2.1",
+          "TestableIO.System.IO.Abstractions.Wrappers": "21.2.1"
         }
       },
       "Azure.Core": {
@@ -839,8 +839,8 @@
       },
       "TestableIO.System.IO.Abstractions": {
         "type": "Transitive",
-        "resolved": "21.1.7",
-        "contentHash": "qsaIAF06PJiFUp1jH2y5NP3IcJILUYtcdGgx25p3D9G4QrFz4Cs3frGp8njX+zQWeb/tHBS+CTMHZtU7Nqa1lg=="
+        "resolved": "21.2.1",
+        "contentHash": "47NQXrfVUF+0b8W5EMnERR7FpgWE04wuYR1s9WvlNyh1hnRMGDPOvmewBLIZUG88Rhj9buzG3VVR8sAgH7TzjA=="
       },
       "dotnet-stryker": {
         "type": "Project",
@@ -1178,10 +1178,10 @@
       "TestableIO.System.IO.Abstractions.Wrappers": {
         "type": "CentralTransitive",
         "requested": "[21.1.7, )",
-        "resolved": "21.1.7",
-        "contentHash": "UcQ+kdN0Ibqbhp6uAMAbc06ri7FeQskQFJX+xZD6siVI5Dg7GaeY4dQYqSfbDA5ZPITtXX9Si4E8XhE6Hhufhg==",
+        "resolved": "21.2.1",
+        "contentHash": "a0jzTAZRIic40USnf8b59EbJ6+hh/kndLV3mTxgSGBkjei/H9qjULOtk/ZHQtRD8lLaUav7ZsMZn6JiwCgDmEw==",
         "dependencies": {
-          "TestableIO.System.IO.Abstractions": "21.1.7"
+          "TestableIO.System.IO.Abstractions": "21.2.1"
         }
       },
       "YamlDotNet": {
diff --git a/src/Stryker.Core/Stryker.Core.UnitTest/packages.lock.json b/src/Stryker.Core/Stryker.Core.UnitTest/packages.lock.json
index d63184e54..a6cb800bd 100644
--- a/src/Stryker.Core/Stryker.Core.UnitTest/packages.lock.json
+++ b/src/Stryker.Core/Stryker.Core.UnitTest/packages.lock.json
@@ -100,12 +100,12 @@
       },
       "TestableIO.System.IO.Abstractions.TestingHelpers": {
         "type": "Direct",
-        "requested": "[21.1.7, )",
-        "resolved": "21.1.7",
-        "contentHash": "2ul9Dpl7GF7OAQUZUWWqjU0tug5h+yMQXRhtcqeFm0oCPtbhMBaBczWu/majJoRAq3ZGbRmPj1+9zLmldjzA5w==",
+        "requested": "[21.2.1, )",
+        "resolved": "21.2.1",
+        "contentHash": "Rt8o05EmQjNJdo57NJchp8Yw6KNYs4mwfJRN7U7l925FAK5gBFXr/A7SB0KDLYwfzHzsGXNV1KxcmJlS3+usmA==",
         "dependencies": {
-          "TestableIO.System.IO.Abstractions": "21.1.7",
-          "TestableIO.System.IO.Abstractions.Wrappers": "21.1.7"
+          "TestableIO.System.IO.Abstractions": "21.2.1",
+          "TestableIO.System.IO.Abstractions.Wrappers": "21.2.1"
         }
       },
       "Azure.Core": {
@@ -835,8 +835,8 @@
       },
       "TestableIO.System.IO.Abstractions": {
         "type": "Transitive",
-        "resolved": "21.1.7",
-        "contentHash": "qsaIAF06PJiFUp1jH2y5NP3IcJILUYtcdGgx25p3D9G4QrFz4Cs3frGp8njX+zQWeb/tHBS+CTMHZtU7Nqa1lg=="
+        "resolved": "21.2.1",
+        "contentHash": "47NQXrfVUF+0b8W5EMnERR7FpgWE04wuYR1s9WvlNyh1hnRMGDPOvmewBLIZUG88Rhj9buzG3VVR8sAgH7TzjA=="
       },
       "stryker": {
         "type": "Project",
@@ -1138,10 +1138,10 @@
       "TestableIO.System.IO.Abstractions.Wrappers": {
         "type": "CentralTransitive",
         "requested": "[21.1.7, )",
-        "resolved": "21.1.7",
-        "contentHash": "UcQ+kdN0Ibqbhp6uAMAbc06ri7FeQskQFJX+xZD6siVI5Dg7GaeY4dQYqSfbDA5ZPITtXX9Si4E8XhE6Hhufhg==",
+        "resolved": "21.2.1",
+        "contentHash": "a0jzTAZRIic40USnf8b59EbJ6+hh/kndLV3mTxgSGBkjei/H9qjULOtk/ZHQtRD8lLaUav7ZsMZn6JiwCgDmEw==",
         "dependencies": {
-          "TestableIO.System.IO.Abstractions": "21.1.7"
+          "TestableIO.System.IO.Abstractions": "21.2.1"
         }
       }
     }