diff --git a/CHANGELOG.md b/CHANGELOG.md
index 03827dd0df8fac2af966bc0b36429a65bc9b70de..68b058f7668cca769b2738fa025129c31f06b811 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## [3.1.0] - 2019-11-13
+### Changed
+- Removed .mo file
+- Translation set in composer extra section
+
 ## [3.0.5] - 2019-09-20
 ### Fixed
 - Fixed missing wp_create_nonce function
diff --git a/composer.json b/composer.json
index b025d7f2fce6f6552a845762208dce3c8275f06d..5ab9f3e522a1d5ae48397fad0eb441849ae712d3 100644
--- a/composer.json
+++ b/composer.json
@@ -24,6 +24,13 @@
     "autoload-dev": {
         "classmap": ["src", "tests"]
     },
+    "extra": {
+        "text-domain": "wp-basic-requirements",
+        "translations-folder": "lang",
+        "po-files": {
+            "pl_PL": "wp-basic-requirements-pl_PL.po"
+        }
+    },
     "scripts": {
         "phpcs": "phpcs",
         "phpunit-unit": "phpunit --configuration phpunit-unit.xml --coverage-text --colors=never",
diff --git a/lang/wp-basic-requirements-pl_PL.mo b/lang/wp-basic-requirements-pl_PL.mo
deleted file mode 100644
index 93b469251941882eb7ff80bb52a03b48b846f2e6..0000000000000000000000000000000000000000
Binary files a/lang/wp-basic-requirements-pl_PL.mo and /dev/null differ