diff --git a/pkgs/tools/typesetting/asciidoctor/Gemfile b/pkgs/tools/typesetting/asciidoctor/Gemfile
index bdaf17212278..f9329a80a815 100644
--- a/pkgs/tools/typesetting/asciidoctor/Gemfile
+++ b/pkgs/tools/typesetting/asciidoctor/Gemfile
@@ -2,6 +2,7 @@ source 'https://rubygems.org'
 gem 'asciidoctor'
 gem 'asciidoctor-diagram'
 gem 'asciidoctor-pdf'
+gem 'asciidoctor-epub3'
 gem 'asciidoctor-mathematical'
 gem 'coderay'
 gem 'pygments.rb'
diff --git a/pkgs/tools/typesetting/asciidoctor/Gemfile.lock b/pkgs/tools/typesetting/asciidoctor/Gemfile.lock
index 2195e224bf84..02081e117d6e 100644
--- a/pkgs/tools/typesetting/asciidoctor/Gemfile.lock
+++ b/pkgs/tools/typesetting/asciidoctor/Gemfile.lock
@@ -8,6 +8,11 @@ GEM
     asciidoctor (2.0.10)
     asciidoctor-diagram (1.5.18)
       asciidoctor (>= 1.5.0, < 3.x)
+    asciidoctor-epub3 (1.5.0.alpha.9)
+      asciidoctor (>= 1.5.0, < 3.0.0)
+      concurrent-ruby (~> 1.1.5)
+      gepub (~> 1.0.2)
+      thread_safe (~> 0.3.6)
     asciidoctor-mathematical (0.3.0)
       asciidoctor (~> 2.0, >= 2.0.0)
       mathematical (~> 1.5, >= 1.5.8)
@@ -27,12 +32,18 @@ GEM
     concurrent-ruby (1.1.5)
     css_parser (1.7.0)
       addressable
+    gepub (1.0.4)
+      nokogiri (>= 1.8.2, < 1.11)
+      rubyzip (>= 1.1.1)
     hashery (2.1.2)
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
     mathematical (1.6.12)
       ruby-enum (~> 0.4)
+    mini_portile2 (2.4.0)
     multi_json (1.13.1)
+    nokogiri (1.10.3)
+      mini_portile2 (~> 2.4.0)
     pdf-core (0.7.0)
     pdf-reader (2.2.0)
       Ascii85 (~> 1.0.0)
@@ -61,6 +72,7 @@ GEM
     ruby-enum (0.7.2)
       i18n
     ruby-rc4 (0.1.5)
+    rubyzip (1.2.3)
     safe_yaml (1.0.5)
     thread_safe (0.3.6)
     treetop (1.5.3)
@@ -73,6 +85,7 @@ PLATFORMS
 DEPENDENCIES
   asciidoctor
   asciidoctor-diagram
+  asciidoctor-epub3
   asciidoctor-mathematical
   asciidoctor-pdf
   coderay
diff --git a/pkgs/tools/typesetting/asciidoctor/default.nix b/pkgs/tools/typesetting/asciidoctor/default.nix
index 9da0d2917277..1a34aa78f6d4 100644
--- a/pkgs/tools/typesetting/asciidoctor/default.nix
+++ b/pkgs/tools/typesetting/asciidoctor/default.nix
@@ -8,6 +8,7 @@ let app = bundlerApp {
       "asciidoctor"
       "asciidoctor-pdf"
       "asciidoctor-safe"
+      "asciidoctor-epub3"
     ];
 
     meta = with lib; {
@@ -22,6 +23,7 @@ let app = bundlerApp {
   shell = mkShell { 
     buildInputs = 
       app.gems.mathematical.buildInputs ++ 
+      app.gems.nokogiri.buildInputs ++ 
       [ bundix ]; 
   };
 in app.overrideAttrs (attrs: { passthru = attrs.passthru // { updateShell = shell; }; })
diff --git a/pkgs/tools/typesetting/asciidoctor/gemset.nix b/pkgs/tools/typesetting/asciidoctor/gemset.nix
index 3e416600822e..02700962eb28 100644
--- a/pkgs/tools/typesetting/asciidoctor/gemset.nix
+++ b/pkgs/tools/typesetting/asciidoctor/gemset.nix
@@ -51,6 +51,17 @@
     };
     version = "1.5.18";
   };
+  asciidoctor-epub3 = {
+    dependencies = ["asciidoctor" "concurrent-ruby" "gepub" "thread_safe"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "056yp0z64b1fhhkzz2kaiqsd11gpbgx2d1yjgq7cqma9c70bbxa5";
+      type = "gem";
+    };
+    version = "1.5.0.alpha.9";
+  };
   asciidoctor-mathematical = {
     dependencies = ["asciidoctor" "mathematical" "ruby-enum"];
     groups = ["default"];
@@ -104,6 +115,17 @@
     };
     version = "1.7.0";
   };
+  gepub = {
+    dependencies = ["nokogiri" "rubyzip"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1kg2h0mscb2hq6l3wjzq5fp5vw4552nglq8n9pawm7bzacf1gzyf";
+      type = "gem";
+    };
+    version = "1.0.4";
+  };
   hashery = {
     groups = ["default"];
     platforms = [];
@@ -136,6 +158,16 @@
     };
     version = "1.6.12";
   };
+  mini_portile2 = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "15zplpfw3knqifj9bpf604rb3wc1vhq6363pd6lvhayng8wql5vy";
+      type = "gem";
+    };
+    version = "2.4.0";
+  };
   multi_json = {
     groups = ["default"];
     platforms = [];
@@ -146,6 +178,17 @@
     };
     version = "1.13.1";
   };
+  nokogiri = {
+    dependencies = ["mini_portile2"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "02bjydih0j515szfv9mls195cvpyidh6ixm7dwbl3s2sbaxxk5s4";
+      type = "gem";
+    };
+    version = "1.10.3";
+  };
   pdf-core = {
     groups = ["default"];
     platforms = [];
@@ -284,6 +327,16 @@
     };
     version = "0.1.5";
   };
+  rubyzip = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1w9gw28ly3zyqydnm8phxchf4ymyjl2r7zf7c12z8kla10cpmhlc";
+      type = "gem";
+    };
+    version = "1.2.3";
+  };
   safe_yaml = {
     groups = ["default"];
     platforms = [];