diff --git a/.travis.yml b/.travis.yml
index bb567cc..6e51088 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,7 @@ php:
   - 5.4
   - 5.5
   - 5.6
+  - 7.1
 
 cache:
   directories:
diff --git a/composer.json b/composer.json
index 998d5e0..df6faed 100644
--- a/composer.json
+++ b/composer.json
@@ -19,6 +19,11 @@
             "email": "tuupola@appelsiini.net",
             "name": "Mika Tuupola",
             "role": "Developer"
+        },
+        {
+            "email": "alexey@kopytko.com",
+            "name": "Alexey Kopytko",
+            "role": "Lead"
         }
     ],
     "autoload": {
@@ -37,6 +42,7 @@
     ],
     "license": "LGPL",
     "minimum-stability": "dev",
+    "prefer-stable": true,
     "name": "pear/spreadsheet_excel_writer",
     "support": {
         "issues": "http://pear.php.net/bugs/search.php?cmd=display&package_name[]=Spreadsheet_Excel_Writer",
@@ -49,6 +55,6 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "phpunit/phpunit": "4.8.*"
+        "phpunit/phpunit": "<6.0"
     }
 }
diff --git a/package.xml b/package.xml
index f4470b6..c62c7d6 100644
--- a/package.xml
+++ b/package.xml
@@ -78,7 +78,7 @@ Bug #12053	With SetVersion(8) setting bottom border color to 0 gives cross borde
  <dependencies>
   <required>
    <php>
-    <min>4.1.0</min>
+    <min>5.3.3</min>
    </php>
    <pearinstaller>
     <min>1.4.0b1</min>
@@ -86,7 +86,7 @@ Bug #12053	With SetVersion(8) setting bottom border color to 0 gives cross borde
    <package>
     <name>OLE</name>
     <channel>pear.php.net</channel>
-    <min>0.5</min>
+    <min>1.0.0RC2</min>
    </package>
   </required>
  </dependencies>