diff --git a/Gemfile.lock b/Gemfile.lock
index a560bd1..6d6d89a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,7 +4,7 @@ PATH
     omniauth-nextcloud (0.2.2)
       omniauth (= 2.0.4)
       omniauth-oauth2 (= 1.7.2)
-      rexml (= 3.2.5)
+      rexml (= 3.2.8)
 
 GEM
   remote: https://rubygems.org/
@@ -41,7 +41,8 @@ GEM
     rainbow (3.0.0)
     rake (13.0.6)
     regexp_parser (2.1.1)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
       rspec-expectations (~> 3.10.0)
@@ -68,6 +69,7 @@ GEM
       parser (>= 3.0.1.1)
     ruby-progressbar (1.11.0)
     ruby2_keywords (0.0.5)
+    strscan (3.1.0)
     unicode-display_width (2.1.0)
 
 PLATFORMS
diff --git a/omniauth-nextcloud.gemspec b/omniauth-nextcloud.gemspec
index c04aea3..89eebb2 100644
--- a/omniauth-nextcloud.gemspec
+++ b/omniauth-nextcloud.gemspec
@@ -30,7 +30,7 @@ Gem::Specification.new do |spec|
   # Uncomment to register a new dependency of your gem
   spec.add_dependency "omniauth", "2.0.4"
   spec.add_dependency "omniauth-oauth2", "1.7.2"
-  spec.add_dependency "rexml", "3.2.5"
+  spec.add_dependency "rexml", "3.2.8"
 
   # For more information and examples about making a new gem, checkout our
   # guide at: https://bundler.io/guides/creating_gem.html