diff --git a/steep/Gemfile.lock b/steep/Gemfile.lock
index a408302b1..c620a8e1e 100644
--- a/steep/Gemfile.lock
+++ b/steep/Gemfile.lock
@@ -17,7 +17,7 @@ GEM
     ast (2.4.2)
     base64 (0.2.0)
     benchmark (0.4.0)
-    bigdecimal (3.1.8)
+    bigdecimal (3.1.9)
     concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
     csv (3.3.2)