diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2e03515..16c9e3d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 CHANGELOG
 ---------
 
+### v3.6.2, 2021.04.09
+
+- Fixed string interpolation
+
 ### v3.6.1, 2020.11.07
 
 - Fixed serialization error [#84](https://github.com/opis/closure/issues/84)
diff --git a/autoload.php b/autoload.php
index a928014..48b10f6 100644
--- a/autoload.php
+++ b/autoload.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/functions.php b/functions.php
index 681854c..38dcb91 100644
--- a/functions.php
+++ b/functions.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/src/Analyzer.php b/src/Analyzer.php
index a30be77..9618b1c 100644
--- a/src/Analyzer.php
+++ b/src/Analyzer.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/src/ClosureContext.php b/src/ClosureContext.php
index d68cf98..d8f13d9 100644
--- a/src/ClosureContext.php
+++ b/src/ClosureContext.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/src/ClosureScope.php b/src/ClosureScope.php
index 71ad414..3afd9b5 100644
--- a/src/ClosureScope.php
+++ b/src/ClosureScope.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/src/ClosureStream.php b/src/ClosureStream.php
index f538419..d77d97c 100644
--- a/src/ClosureStream.php
+++ b/src/ClosureStream.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/src/ISecurityProvider.php b/src/ISecurityProvider.php
index d3b0a29..54e2e20 100644
--- a/src/ISecurityProvider.php
+++ b/src/ISecurityProvider.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/src/ReflectionClosure.php b/src/ReflectionClosure.php
index ccd4ab6..1f6a832 100644
--- a/src/ReflectionClosure.php
+++ b/src/ReflectionClosure.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/src/SecurityException.php b/src/SecurityException.php
index 6a107ee..b65f5cb 100644
--- a/src/SecurityException.php
+++ b/src/SecurityException.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/src/SecurityProvider.php b/src/SecurityProvider.php
index 5ae4116..1952917 100644
--- a/src/SecurityProvider.php
+++ b/src/SecurityProvider.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/src/SelfReference.php b/src/SelfReference.php
index 3c6ec80..425edf2 100644
--- a/src/SelfReference.php
+++ b/src/SelfReference.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/src/SerializableClosure.php b/src/SerializableClosure.php
index 8f254d1..1025ff5 100644
--- a/src/SerializableClosure.php
+++ b/src/SerializableClosure.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/tests/ClosureTest.php b/tests/ClosureTest.php
index 18a65be..3b9baf0 100644
--- a/tests/ClosureTest.php
+++ b/tests/ClosureTest.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/tests/JsonSerializableClosure.php b/tests/JsonSerializableClosure.php
index 1fa1f2f..481ad5d 100644
--- a/tests/JsonSerializableClosure.php
+++ b/tests/JsonSerializableClosure.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2019-2020 Zindex Software
+ * Copyright (c) 2019-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/tests/RecursiveArrayTest.php b/tests/RecursiveArrayTest.php
index b786db1..c58444a 100644
--- a/tests/RecursiveArrayTest.php
+++ b/tests/RecursiveArrayTest.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/tests/ReflectionClosure2Test.php b/tests/ReflectionClosure2Test.php
index 828cfa9..29eeb5f 100644
--- a/tests/ReflectionClosure2Test.php
+++ b/tests/ReflectionClosure2Test.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/tests/ReflectionClosure3Test.php b/tests/ReflectionClosure3Test.php
index d5ee7af..12d0739 100644
--- a/tests/ReflectionClosure3Test.php
+++ b/tests/ReflectionClosure3Test.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/tests/ReflectionClosure4Test.php b/tests/ReflectionClosure4Test.php
index 10c57d5..47fd5b8 100644
--- a/tests/ReflectionClosure4Test.php
+++ b/tests/ReflectionClosure4Test.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/tests/ReflectionClosure5Test.php b/tests/ReflectionClosure5Test.php
index acdc675..379bf24 100644
--- a/tests/ReflectionClosure5Test.php
+++ b/tests/ReflectionClosure5Test.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/tests/SerializeTest.php b/tests/SerializeTest.php
index f4d9393..cfefcee 100644
--- a/tests/SerializeTest.php
+++ b/tests/SerializeTest.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */
diff --git a/tests/SignedClosureTest.php b/tests/SignedClosureTest.php
index 61cc1bd..6da82d4 100644
--- a/tests/SignedClosureTest.php
+++ b/tests/SignedClosureTest.php
@@ -1,6 +1,6 @@
 <?php
 /* ===========================================================================
- * Copyright (c) 2018-2019 Zindex Software
+ * Copyright (c) 2018-2021 Zindex Software
  *
  * Licensed under the MIT License
  * =========================================================================== */