diff --git a/Carousel.php b/Carousel.php
index 468b316..7faf887 100644
--- a/Carousel.php
+++ b/Carousel.php
@@ -88,7 +88,7 @@ class Carousel extends Widget
             $this->renderItems(),
             $this->renderControls(),
             Html::endTag('div')
-        ]);
+        ]) . "\n";
     }
 
     /**
diff --git a/Collapse.php b/Collapse.php
index 0222a5a..1fabed7 100644
--- a/Collapse.php
+++ b/Collapse.php
@@ -81,7 +81,7 @@ class Collapse extends Widget
             Html::beginTag('div', $this->options),
             $this->renderItems(),
             Html::endTag('div')
-        ]);
+        ]) . "\n";
     }
 
     /**
diff --git a/Progress.php b/Progress.php
index 4e7d903..fbc9eb8 100644
--- a/Progress.php
+++ b/Progress.php
@@ -110,7 +110,7 @@ class Progress extends Widget
             Html::beginTag('div', $this->options),
             $this->renderProgress(),
             Html::endTag('div')
-        ]);
+        ]) . "\n";
     }
 
     /**