diff --git a/Gemfile b/Gemfile
index 07a76ab4..873c7ea1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -30,7 +30,7 @@ gem "rqrcode"
 
 # parsing
 gem "pdf-reader"
-gem "nokogiri", ">= 1.13.2"
+gem "nokogiri", ">= 1.13.6"
 gem "htmlentities"
 gem "commonmarker", ">= 0.23.4"
 
diff --git a/Gemfile.lock b/Gemfile.lock
index fcdc939b..696d77c5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -309,7 +309,7 @@ DEPENDENCIES
   mail
   memory_profiler
   mysql2
-  nokogiri (>= 1.13.2)
+  nokogiri (>= 1.13.6)
   oauth
   pdf-reader
   puma (>= 5.6.2)