diff --git a/VERSION b/VERSION
index fd4ca57..771411b 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.4.19
+1.4.20
diff --git a/resources/debian/control b/resources/debian/control
index 86887eb..ec4c4de 100644
--- a/resources/debian/control
+++ b/resources/debian/control
@@ -10,6 +10,6 @@ Vcs-Git: https://github.com/~#VENDOR#~/~#PROJECT#~.git
 Package: ~#PKGNAME#~
 Provides: php-~#PROJECT#~
 Architecture: all
-Depends: php (>= 5.4.0), php-mbstring, php-tecnickcom-tc-lib-unicode-data (<< 2.0.0), php-tecnickcom-tc-lib-unicode-data (>= 1.7.19), ${misc:Depends}
+Depends: php (>= 5.4.0), php-mbstring, php-tecnickcom-tc-lib-unicode-data (<< 2.0.0), php-tecnickcom-tc-lib-unicode-data (>= 1.7.20), ${misc:Depends}
 Description: PHP Unicode methods.
  PHP library containing Unicode methods.
diff --git a/resources/rpm/rpm.spec b/resources/rpm/rpm.spec
index 41775f5..5320737 100644
--- a/resources/rpm/rpm.spec
+++ b/resources/rpm/rpm.spec
@@ -18,7 +18,7 @@ BuildArch: noarch
 
 Requires:  php(language) >= 5.4.0
 Requires:  php-composer(%{c_vendor}/tc-lib-unicode-data) < 2.0.0
-Requires:  php-composer(%{c_vendor}/tc-lib-unicode-data) >= 1.7.19
+Requires:  php-composer(%{c_vendor}/tc-lib-unicode-data) >= 1.7.20
 Requires:  php-pcre
 Requires:  php-mbstring
 
diff --git a/test/TestUtil.php b/test/TestUtil.php
index 02d9d59..fac43e7 100644
--- a/test/TestUtil.php
+++ b/test/TestUtil.php
@@ -32,7 +32,7 @@ class TestUtil extends TestCase
 {
     public function bcExpectException($exception)
     {
-        if (\is_callable(['parent', 'expectException'])) {
+        if (\is_callable([self::class, 'expectException'])) {
             return parent::expectException($exception);
         }
         return parent::setExpectedException($exception);