diff --git a/Gemfile.lock b/Gemfile.lock
index 2f0811eee..0d1100a70 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -220,8 +220,6 @@ GEM
       ast (~> 2.4.0)
     pdf-core (0.7.0)
     pg (0.21.0)
-    polyamorous (1.3.3)
-      activerecord (>= 3.0)
     prawn (2.2.2)
       pdf-core (~> 0.7.0)
       ttfunk (~> 1.5)
@@ -266,12 +264,11 @@ GEM
     rainbow (3.0.0)
     raindrops (0.16.0)
     rake (13.0.1)
-    ransack (1.8.6)
-      actionpack (>= 3.0)
-      activerecord (>= 3.0)
-      activesupport (>= 3.0)
+    ransack (1.8.10)
+      actionpack (>= 3.0, < 5.2)
+      activerecord (>= 3.0, < 5.2)
+      activesupport (>= 3.0, < 5.2)
       i18n
-      polyamorous (~> 1.3.2)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.1)
       ffi (~> 1.0)