diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b3e31f7a..749acc91 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rails: ["8.0", "7.2", "7.1", "7.0", "6.1", "6.0"]
+        rails: ["8.1", "8.0", "7.2", "7.1", "7.0", "6.1", "6.0"]
         ruby: ["3.4", "3.3", "3.2", "3.1", "3.0", "2.7"]
         include:
           - rails: "5.2"
@@ -34,6 +34,12 @@ jobs:
             ruby: "3.0"
           - rails: "8.0"
             ruby: "3.1"
+          - rails: "8.1"
+            ruby: "2.7"
+          - rails: "8.1"
+            ruby: "3.0"
+          - rails: "8.1"
+            ruby: "3.1"
 
     env:
       RAILS_VERSION: ${{ matrix.rails }}
diff --git a/lib/apipie/routing.rb b/lib/apipie/routing.rb
index a2ce2ad1..e7d1fc7d 100644
--- a/lib/apipie/routing.rb
+++ b/lib/apipie/routing.rb
@@ -5,7 +5,9 @@ def apipie(options = {})
         namespace "apipie", :path => Apipie.configuration.doc_base_url do
           get 'apipie_checksum', :to => "apipies#apipie_checksum", :format => "json"
           constraints(:version => %r{[^/]+}, :resource => %r{[^/]+}, :method => %r{[^/]+}) do
-            get(options.reverse_merge("(:version)/(:resource)/(:method)" => "apipies#index", :as => :apipie))
+            get_args = options.reverse_merge("(:version)/(:resource)/(:method)" => "apipies#index", :as => :apipie)
+
+            Rails.version >= "5.2" ? get(**get_args) : get(get_args)
           end
         end
       end