diff --git a/pkgs/tools/typesetting/asciidoctor-with-extensions/Gemfile b/pkgs/tools/typesetting/asciidoctor-with-extensions/Gemfile
index 8326fabad510..12c132a81d1c 100644
--- a/pkgs/tools/typesetting/asciidoctor-with-extensions/Gemfile
+++ b/pkgs/tools/typesetting/asciidoctor-with-extensions/Gemfile
@@ -7,6 +7,7 @@ gem 'asciidoctor-html5s'
 gem 'asciidoctor-mathematical'
 gem 'asciidoctor-multipage'
 gem 'asciidoctor-pdf'
+gem 'asciidoctor-reducer'
 gem 'asciidoctor-revealjs'
 gem 'coderay'
 gem 'pygments.rb'
diff --git a/pkgs/tools/typesetting/asciidoctor-with-extensions/Gemfile.lock b/pkgs/tools/typesetting/asciidoctor-with-extensions/Gemfile.lock
index 90081826f702..da7c2fccb1b6 100644
--- a/pkgs/tools/typesetting/asciidoctor-with-extensions/Gemfile.lock
+++ b/pkgs/tools/typesetting/asciidoctor-with-extensions/Gemfile.lock
@@ -42,6 +42,8 @@ GEM
       prawn-table (~> 0.2.0)
       prawn-templates (~> 0.1.0)
       treetop (~> 1.6.0)
+    asciidoctor-reducer (1.0.5)
+      asciidoctor (~> 2.0)
     asciidoctor-revealjs (5.0.1)
       asciidoctor (>= 2.0.0, < 3.0.0)
     asciimath (2.0.5)
@@ -127,6 +129,7 @@ DEPENDENCIES
   asciidoctor-mathematical
   asciidoctor-multipage
   asciidoctor-pdf
+  asciidoctor-reducer
   asciidoctor-revealjs
   coderay
   pygments.rb
diff --git a/pkgs/tools/typesetting/asciidoctor-with-extensions/default.nix b/pkgs/tools/typesetting/asciidoctor-with-extensions/default.nix
index 50ee906262ee..ba9c21631a90 100644
--- a/pkgs/tools/typesetting/asciidoctor-with-extensions/default.nix
+++ b/pkgs/tools/typesetting/asciidoctor-with-extensions/default.nix
@@ -17,6 +17,7 @@ bundlerApp rec {
     "asciidoctor-epub3"
     "asciidoctor-multipage"
     "asciidoctor-pdf"
+    "asciidoctor-reducer"
     "asciidoctor-revealjs"
   ];
 
diff --git a/pkgs/tools/typesetting/asciidoctor-with-extensions/gemset.nix b/pkgs/tools/typesetting/asciidoctor-with-extensions/gemset.nix
index 0a88d0285c45..ac3fb75898fb 100644
--- a/pkgs/tools/typesetting/asciidoctor-with-extensions/gemset.nix
+++ b/pkgs/tools/typesetting/asciidoctor-with-extensions/gemset.nix
@@ -137,6 +137,17 @@
     };
     version = "2.3.9";
   };
+  asciidoctor-reducer = {
+    dependencies = ["asciidoctor"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1708fi4bxjpkdszm6a4naa0qcsl0vqnhcklryn2sysl24zaz07h5";
+      type = "gem";
+    };
+    version = "1.0.5";
+  };
   asciidoctor-revealjs = {
     dependencies = ["asciidoctor"];
     groups = ["default"];