diff --git a/rubygem-kramdown.spec b/rubygem-kramdown.spec
index 85d75c7..901f614 100644
--- a/rubygem-kramdown.spec
+++ b/rubygem-kramdown.spec
@@ -15,8 +15,6 @@ BuildRequires:	rubygem(minitest) >= 5
 BuildRequires:	rubygem(rexml)
 BuildRequires:	rubygem(rouge) >= 3.26.0
 BuildRequires:	rubygem(test-unit)
-BuildRequires:	rubygem(stringex)
-# Recommends:	rubygem(stringex)
 # Some additional dependency for check
 BuildRequires:	tidy
 Requires:	ruby(release)
@@ -71,6 +69,12 @@ LANG=C.UTF-8
 
 pushd .%{gem_instdir}
 
+sed -i test/testcases/block/04_header/with_auto_ids.options \
+       -e '\@transliterated_header_ids@s|true|false|'
+sed -i \
+       test/testcases/block/04_header/with_auto_ids.* \
+       -e '\@[Tr]ransliterated@d'
+
 export RUBYLIB=$(pwd)/lib
 ruby -e 'Dir.glob "./test/test_*.rb", &method(:require)'
 
@@ -99,7 +103,7 @@ popd
 
 %changelog
 * Thu May 13 2021 Vít Ondruch <vondruch@redhat.com> - 2.3.1-3
-- Drop Latex test cases.
+- Drop Latex test cases and disable stringex dependency.
   Resolves: rhbz#1951246
 
 * Fri Apr 16 2021 Mohan Boddu <mboddu@redhat.com> - 2.3.1-2