diff --git a/tools/chunk-options.R b/tools/chunk-options.R
index 4856ca82f626bf912a7db71266a60a9dcc379a77..0411805a40e08232c6039a88c85dbd42675dc8cb 100644
--- a/tools/chunk-options.R
+++ b/tools/chunk-options.R
@@ -23,4 +23,4 @@ hook_out <- function(x, options) {
 }
 
 knit_hooks$set(source = hook_in, output = hook_out, warning = hook_out,
-               error = hook_out, message = hook_out)
\ No newline at end of file
+               error = hook_out, message = hook_out)
diff --git a/tools/validation_helpers.py b/tools/validation_helpers.py
index ed383c1ad0dfda9da1ec78113a02e8534fd515fe..b6d9982feb49c5f7d415f32666f8aa55493142c1 100644
--- a/tools/validation_helpers.py
+++ b/tools/validation_helpers.py
@@ -239,4 +239,4 @@ class CommonMarkHelper(object):
         else:
             has_heading = False
 
-        return self.is_block(ast_node) and has_heading
\ No newline at end of file
+        return self.is_block(ast_node) and has_heading