3 files changed, 3 insertions, 3 deletions
diff --git a/lib/axlsx/stylesheet/gradient_fill.rb b/lib/axlsx/stylesheet/gradient_fill.rb
index ff6903a5..508c91a2 100644
--- a/lib/axlsx/stylesheet/gradient_fill.rb
+++ b/lib/axlsx/stylesheet/gradient_fill.rb
@@ -86,7 +86,7 @@ module Axlsx
 
     # validates that the value provided is between 0.0 and 1.0
     def validate_format_percentage(name, value)
-      DataTypeValidator.validate name, Float, value, lambda { |arg| arg >= 0.0 && arg <= 1.0 }
+      DataTypeValidator.validate name, Float, value, ->(arg) { arg >= 0.0 && arg <= 1.0 }
     end
 
     # Serializes the object
diff --git a/lib/axlsx/stylesheet/gradient_stop.rb b/lib/axlsx/stylesheet/gradient_stop.rb
index dd0ea00f..b0d66683 100644
--- a/lib/axlsx/stylesheet/gradient_stop.rb
+++ b/lib/axlsx/stylesheet/gradient_stop.rb
@@ -24,7 +24,7 @@ module Axlsx
     # @see color
     def color=(v) DataTypeValidator.validate "GradientStop.color", Color, v; @color = v end
     # @see position
-    def position=(v) DataTypeValidator.validate "GradientStop.position", Float, v, lambda { |arg| arg >= 0 && arg <= 1 }; @position = v end
+    def position=(v) DataTypeValidator.validate "GradientStop.position", Float, v, ->(arg) { arg >= 0 && arg <= 1 }; @position = v end
 
     # Serializes the object
     # @param [String] str
diff --git a/lib/axlsx/stylesheet/styles.rb b/lib/axlsx/stylesheet/styles.rb
index bdda36c7..d9c5683a 100644
--- a/lib/axlsx/stylesheet/styles.rb
+++ b/lib/axlsx/stylesheet/styles.rb
@@ -380,7 +380,7 @@ module Axlsx
         end
       end
 
-      validate_border_hash = ->(val) {
+      validate_border_hash = lambda { |val|
         unless val.key?(:style) && val.key?(:color)
           raise ArgumentError, format(ERR_INVALID_BORDER_OPTIONS, options[:border])
         end