diff --git a/Gemfile b/Gemfile
index 5cf417a67ae3d0c96b49af115fca1d97abfa8fac..fe78422b2876e4b31c9434f55d4d7bd66e9c645d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -178,7 +178,7 @@ gem 'escape_utils', '~> 1.1'
 gem 'icalendar'
 
 # Diffs
-gem 'diffy', '~> 3.3'
+gem 'diffy', '~> 3.4'
 gem 'diff_match_patch', '~> 0.1.0'
 
 # Application server
diff --git a/Gemfile.lock b/Gemfile.lock
index f04445e1d571b764a99445b35f7e1f13fb2196db..b58df224e7f3f8ee083849faa69252d58eb10981 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,7 +14,7 @@ PATH
   remote: vendor/gems/ipynbdiff
   specs:
     ipynbdiff (0.4.7)
-      diffy (~> 3.3)
+      diffy (~> 3.4)
       oj (~> 3.13.16)
 
 PATH
@@ -320,7 +320,7 @@ GEM
       rotp (~> 6.0)
     diff-lcs (1.5.0)
     diff_match_patch (0.1.0)
-    diffy (3.3.0)
+    diffy (3.4.2)
     discordrb-webhooks (3.4.2)
       rest-client (>= 2.0.0)
     docile (1.4.0)
@@ -1539,7 +1539,7 @@ DEPENDENCIES
   devise-pbkdf2-encryptable (~> 0.0.0)!
   devise-two-factor (~> 4.0.2)
   diff_match_patch (~> 0.1.0)
-  diffy (~> 3.3)
+  diffy (~> 3.4)
   discordrb-webhooks (~> 3.4)
   doorkeeper (~> 5.5.0.rc2)
   doorkeeper-openid_connect (~> 1.7.5)
diff --git a/vendor/gems/ipynbdiff/Gemfile.lock b/vendor/gems/ipynbdiff/Gemfile.lock
index 1c2fd81e3b4b650517cbd157fec756a7709b3dde..6a8d375060251881f43b1e53d3ac458a22ae2b50 100644
--- a/vendor/gems/ipynbdiff/Gemfile.lock
+++ b/vendor/gems/ipynbdiff/Gemfile.lock
@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     ipynbdiff (0.4.7)
-      diffy (~> 3.3)
+      diffy (~> 3.4)
       oj (~> 3.13.16)
 
 GEM
diff --git a/vendor/gems/ipynbdiff/ipynbdiff.gemspec b/vendor/gems/ipynbdiff/ipynbdiff.gemspec
index 3054118ea47b632f93479c31da7995d5827d42b0..014005029eff4a1154e5c33d405b09d090683efb 100644
--- a/vendor/gems/ipynbdiff/ipynbdiff.gemspec
+++ b/vendor/gems/ipynbdiff/ipynbdiff.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |s|
 
   s.require_paths = ['lib']
 
-  s.add_runtime_dependency 'diffy', '~> 3.3'
+  s.add_runtime_dependency 'diffy', '~> 3.4'
   s.add_runtime_dependency 'oj', '~> 3.13.16'
 
   s.add_development_dependency 'bundler', '~> 2.2'