diff --git a/Gemfile b/Gemfile
index 5351e65b..71dff09d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -92,7 +92,7 @@ gem 'image_processing', '>= 1.2'
 
 gem 'json-schema', '~> 6.0'
 
-gem 'triangulum', '0.31.0'
+gem 'triangulum', '0.31.1'
 
 gem 'benchmark'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 63e74329..70361c71 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -590,7 +590,7 @@ GEM
       logger
     thor (1.5.0)
     timeout (0.6.1)
-    triangulum (0.31.0)
+    triangulum (0.31.1)
       base64 (~> 0.3)
       json (~> 2.19)
       open3 (~> 0.2)
@@ -656,7 +656,7 @@ DEPENDENCIES
   simplecov (~> 1.0.0)
   simplecov-cobertura (~> 4.0)
   test-prof (~> 1.0)
-  triangulum (= 0.31.0)
+  triangulum (= 0.31.1)
   tucana (= 0.0.82)
   tzinfo-data