diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f6e785d0..89afa6b7d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,10 @@
 * [#70](https://github.com/rubocop-hq/rubocop-ast/pull/70): Fix arguments processing for `BreakNode` ([@marcandre][])
 * [#70](https://github.com/rubocop-hq/rubocop-ast/pull/70): **(Potentially breaking)** `BreakNode` and `ReturnNode` no longer include `MethodDispatchNode`. These methods were severely broken ([@marcandre][])
 
+### Changes
+
+* [#86](https://github.com/rubocop-hq/rubocop-ast/pull/86): `PairNode#delimiter` and `inverse_delimiter` now accept their argument as a named argument. ([@marcandre][])
+
 ## 0.2.0 (2020-07-19)
 
 ### New features
diff --git a/lib/rubocop/ast/node/pair_node.rb b/lib/rubocop/ast/node/pair_node.rb
index da2e34bea..5e7cc5271 100644
--- a/lib/rubocop/ast/node/pair_node.rb
+++ b/lib/rubocop/ast/node/pair_node.rb
@@ -32,7 +32,7 @@ def colon?
       #
       # @param [Boolean] with_spacing whether to include spacing
       # @return [String] the delimiter of the `pair`
-      def delimiter(with_spacing = false)
+      def delimiter(*deprecated, with_spacing: deprecated.first)
         if with_spacing
           hash_rocket? ? SPACED_HASH_ROCKET : SPACED_COLON
         else
@@ -44,7 +44,7 @@ def delimiter(with_spacing = false)
       #
       # @param [Boolean] with_spacing whether to include spacing
       # @return [String] the inverse delimiter of the `pair`
-      def inverse_delimiter(with_spacing = false)
+      def inverse_delimiter(*deprecated, with_spacing: deprecated.first)
         if with_spacing
           hash_rocket? ? SPACED_COLON : SPACED_HASH_ROCKET
         else