diff --git a/Gemfile b/Gemfile
index 35e3ac65..7447b215 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
 source 'https://rubygems.org'
 
-gem 'activerecord', '~> 4.1.0'
+gem 'activerecord', '~> 5.2.8'
 gem 'activerecord-jdbcderby-adapter'
diff --git a/Gemfile.lock b/Gemfile.lock
index 6e0741a0..7a12315e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,37 +1,37 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (4.1.8)
-      activesupport (= 4.1.8)
-      builder (~> 3.1)
-    activerecord (4.1.8)
-      activemodel (= 4.1.8)
-      activesupport (= 4.1.8)
-      arel (~> 5.0.0)
+    activemodel (5.2.8.1)
+      activesupport (= 5.2.8.1)
+    activerecord (5.2.8.1)
+      activemodel (= 5.2.8.1)
+      activesupport (= 5.2.8.1)
+      arel (>= 9.0)
     activerecord-jdbc-adapter (1.3.13)
       activerecord (>= 2.2)
     activerecord-jdbcderby-adapter (1.3.13)
       activerecord-jdbc-adapter (~> 1.3.13)
       jdbc-derby (~> 10.6)
-    activesupport (4.1.8)
-      i18n (~> 0.6, >= 0.6.9)
-      json (~> 1.7, >= 1.7.7)
+    activesupport (5.2.8.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
-      thread_safe (~> 0.1)
       tzinfo (~> 1.1)
-    arel (5.0.1.20140414130214)
-    builder (3.2.2)
-    i18n (0.7.0)
+    arel (9.0.0)
+    concurrent-ruby (1.1.10)
+    i18n (1.11.0)
+      concurrent-ruby (~> 1.0)
     jdbc-derby (10.10.2.0)
-    json (1.8.1-java)
-    minitest (5.5.0)
-    thread_safe (0.3.4-java)
-    tzinfo (1.2.2)
+    minitest (5.16.2)
+    thread_safe (0.3.6)
+    thread_safe (0.3.6-java)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
 
 PLATFORMS
   java
+  ruby
 
 DEPENDENCIES
-  activerecord (~> 4.1.0)
+  activerecord (~> 5.2.8)
   activerecord-jdbcderby-adapter