diff --git a/Gemfile.lock b/Gemfile.lock
index 531f51a5..16861014 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,7 +69,8 @@ GEM
       execjs (~> 2.0)
     base64 (0.2.0)
     bcrypt (3.1.22)
-    bigdecimal (3.1.5)
+    benchmark (0.5.0)
+    bigdecimal (4.1.2)
     bootsnap (1.18.6)
       msgpack (~> 1.2)
     brakeman (5.4.1)
@@ -173,7 +174,7 @@ GEM
       thor (>= 0.14, < 2.0)
     jquery-visibility-rails (1.0.8)
     json (2.6.1)
-    jwt (2.10.2)
+    jwt (2.10.3)
       base64
     keccak (1.3.1)
     kt-paperclip (6.4.2)
@@ -211,7 +212,7 @@ GEM
     msgpack (1.8.0)
     multi_json (1.15.0)
     multi_xml (0.6.0)
-    mutex_m (0.2.0)
+    mutex_m (0.3.0)
     mysql2 (0.5.4)
     net-http (0.9.1)
       uri (>= 0.11.1)
@@ -239,6 +240,7 @@ GEM
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (>= 1.2, < 4)
+    observer (0.1.2)
     omniauth (1.9.2)
       hashie (>= 3.4.6)
       rack (>= 1.6.2, < 3)
@@ -406,8 +408,9 @@ PLATFORMS
 
 DEPENDENCIES
   annotate
-  base64 (= 0.2.0)
-  bigdecimal (= 3.1.5)
+  base64 (>= 0.2.0)
+  benchmark
+  bigdecimal (>= 3.1.8)
   bootsnap (>= 1.1.0)
   brakeman
   bundler-audit (>= 0.9.0.1)
@@ -424,7 +427,7 @@ DEPENDENCIES
   devise
   devise-i18n (~> 1.8, >= 1.8.2)
   devise_ldap_authenticatable
-  drb
+  drb (>= 2.2.1)
   factory_bot_rails (>= 5.1.1)
   fancybox2-rails (~> 0.2, >= 0.2.7)
   font-awesome-rails (~> 4.7, >= 4.7.0.5)
@@ -439,9 +442,10 @@ DEPENDENCIES
   launchy
   letter_opener (~> 1.4)
   mail (>= 2.8.0)
-  mutex_m (= 0.2.0)
+  mutex_m (>= 0.3.0)
   mysql2 (~> 0.4)
   nokogiri (>= 1.18.9)
+  observer (>= 0.1.2)
   omniauth (< 2.0.0)
   omniauth-google-oauth2
   omniauth-rails_csrf_protection (< 1.0.0)