diff --git a/Calculator-LTI/Gemfile.lock b/Calculator-LTI/Gemfile.lock
index 48cf2e7..da1fc92 100644
--- a/Calculator-LTI/Gemfile.lock
+++ b/Calculator-LTI/Gemfile.lock
@@ -93,12 +93,12 @@ GEM
     mini_portile2 (2.4.0)
     minitest (5.10.3)
     multi_json (1.12.2)
-    nio4r (2.1.0)
+    nio4r (2.5.2)
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     oauth (0.5.3)
     public_suffix (3.0.0)
-    puma (4.3.1)
+    puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.0.8)
     rack-test (0.7.0)