diff --git a/.gitignore b/.gitignore
index 4943b75..81c195b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /prawn-*.gem
 /prawn-*-data.txz
+/prawn-data.txz
diff --git a/rubygem-prawn.spec b/rubygem-prawn.spec
index 1269f68..c26f711 100644
--- a/rubygem-prawn.spec
+++ b/rubygem-prawn.spec
@@ -2,26 +2,25 @@
 
 Summary: A fast and nimble PDF generator for Ruby
 Name: rubygem-%{gem_name}
-Version: 2.3.0
+Version: 2.4.0
 Release: 1%{?dist}
 # afm files are licensed by APAFML, the rest of package is GPLv2 or GPLv3 or Ruby
 License: (GPLv2 or GPLv3 or Ruby) and APAFML
 URL: http://prawnpdf.org
 Source0: https://rubygems.org/gems/%{gem_name}-%{version}.gem
 # Not all of data is shipped, but it's needed for the test suite.
-# You may check it like so:
+# You may check out it like so:
 # git clone --no-checkout https://github.com/prawnpdf/prawn.git
-# cd prawn && git archive -v -o prawn-2.3.0-data.txz 2.3.0 data
-Source1: %{gem_name}-%{version}-data.txz
+# cd prawn && git archive -v -o prawn-data.txz 2.4.0 data spec/data
+Source1: %{gem_name}-data.txz
 BuildRequires: ruby
 BuildRequires: ruby(release)
 BuildRequires: rubygems-devel >= 1.3.6
 BuildRequires: rubygem(rspec) >= 3.0
-BuildRequires: rubygem(ttfunk) >= 1.6
+BuildRequires: rubygem(ttfunk) >= 1.7
 BuildRequires: rubygem(pdf-reader) >= 1.4.0
 BuildRequires: rubygem(pdf-inspector) >= 1.2.1
-BuildRequires: rubygem(pdf-core) >= 0.8.1
-BuildRequires: rubygem(bigdecimal)
+BuildRequires: rubygem(pdf-core) >= 0.9.0
 BuildArch: noarch
 
 %description
@@ -105,6 +104,10 @@ popd
 %doc %{gem_instdir}/data/fonts/MustRead.html
 
 %changelog
+* Fri Jan 8 2021 Christopher Brown <chris.brown@redhat.com> - 2.4.0-1
+- Update to 2.4.0
+  Resolves: rhbz#1911811
+
 * Mon Aug 03 06:49:08 GMT 2020 Pavel Valena <pvalena@redhat.com> - 2.3.0-1
 - Update to prawn 2.3.0.
   Resolves: rhbz#1862713
diff --git a/sources b/sources
index 43c4b51..6a4641f 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (prawn-2.3.0.gem) = de830e1aaddc4ab382495516d503f433063a883cef6066ddbe9c6f670a51132979e33fa7860d7d3b32e1f1cd4f2ec118af7dfa5d13f5b79cfdd12f7e10e27b15
-SHA512 (prawn-2.3.0-data.txz) = 73a6c351b12f9b5a30cba684cf97c573f5e1bf9fd8935afc28804b552989ca79dded71828bcf72b85db1529e05fd408b9e75cb8df267d393fb48bfc71bdd3364
+SHA512 (prawn-2.4.0.gem) = 74025d1bdcb51da3808736f60f834a1964430f30d351c0fd16d6af7d8a9c302fa9bee50087a474528d319932c3d22132c5c900b0ce39503f0dce3ac650772df3
+SHA512 (prawn-data.txz) = fe684875a8e92ea09de36bbaf3c923100cd96f55d50e75241d09f7e22a0c9e3ed02351edfe819be002740fe87a3c056cc5cee60a69db7a5fa97b6637e4751837