diff --git a/evaluationserver/Gemfile.lock b/evaluationserver/Gemfile.lock
index d555d8371..8c179adc5 100644
--- a/evaluationserver/Gemfile.lock
+++ b/evaluationserver/Gemfile.lock
@@ -141,7 +141,7 @@ GEM
     multi-select-rails (0.9.12)
       railties (>= 3.0)
     mysql2 (0.5.2)
-    nio4r (2.4.0)
+    nio4r (2.5.2)
     nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
     paperclip (6.1.0)
@@ -153,7 +153,7 @@ GEM
     parser (2.6.3.0)
       ast (~> 2.4.0)
     public_suffix (3.1.1)
-    puma (4.0.1)
+    puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.0.7)
     rack-test (1.1.0)