diff --git a/Gemfile b/Gemfile
index ff48cc06..0f1123c6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -54,7 +54,7 @@ gem "letter_opener", :group => :development
 gem "parallel", "~> 1.13.0"
 
 # For debugging.
-gem 'web-console', '~> 2.2', '>= 2.2.1'
+gem 'web-console', '~> 3.7'
 
 # TODO: Rails requests the latest version of these dependencies, but they
 # require Ruby 2.5 or higher, so we have to request lower ones instead!
diff --git a/Gemfile.lock b/Gemfile.lock
index e520c0bd..322b517e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -55,8 +55,7 @@ GEM
       babel-source (>= 4.0, < 6)
       execjs (~> 2.0)
     bcrypt (3.1.19)
-    binding_of_caller (1.0.0)
-      debug_inspector (>= 0.0.1)
+    bindex (0.8.1)
     bootsnap (1.12.0)
       msgpack (~> 1.2)
     builder (3.2.4)
@@ -86,7 +85,6 @@ GEM
     concurrent-ruby (1.2.2)
     connection_pool (2.2.5)
     crass (1.0.6)
-    debug_inspector (1.1.0)
     devise (4.9.2)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
@@ -247,11 +245,11 @@ GEM
       execjs (>= 0.3.0, < 3)
     warden (1.2.7)
       rack (>= 1.0)
-    web-console (2.3.0)
-      activemodel (>= 4.0)
-      binding_of_caller (>= 0.7.2)
-      railties (>= 4.0)
-      sprockets-rails (>= 2.0, < 4.0)
+    web-console (3.7.0)
+      actionview (>= 5.0)
+      activemodel (>= 5.0)
+      bindex (>= 0.4.0)
+      railties (>= 5.0)
     websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
@@ -293,7 +291,7 @@ DEPENDENCIES
   sanitize (~> 2.0.3)
   sass-rails (~> 5.0, >= 5.0.7)
   uglifier (~> 4.2)
-  web-console (~> 2.2, >= 2.2.1)
+  web-console (~> 3.7)
   will_paginate (~> 4.0)
 
 RUBY VERSION
diff --git a/vendor/cache/bindex-0.8.1.gem b/vendor/cache/bindex-0.8.1.gem
new file mode 100644
index 00000000..ebf48db9
Binary files /dev/null and b/vendor/cache/bindex-0.8.1.gem differ
diff --git a/vendor/cache/binding_of_caller-1.0.0.gem b/vendor/cache/binding_of_caller-1.0.0.gem
deleted file mode 100644
index 81be9b1d..00000000
Binary files a/vendor/cache/binding_of_caller-1.0.0.gem and /dev/null differ
diff --git a/vendor/cache/debug_inspector-1.1.0.gem b/vendor/cache/debug_inspector-1.1.0.gem
deleted file mode 100644
index c16993e8..00000000
Binary files a/vendor/cache/debug_inspector-1.1.0.gem and /dev/null differ
diff --git a/vendor/cache/web-console-2.3.0.gem b/vendor/cache/web-console-2.3.0.gem
deleted file mode 100644
index d0d61cc2..00000000
Binary files a/vendor/cache/web-console-2.3.0.gem and /dev/null differ
diff --git a/vendor/cache/web-console-3.7.0.gem b/vendor/cache/web-console-3.7.0.gem
new file mode 100644
index 00000000..82e5bde3
Binary files /dev/null and b/vendor/cache/web-console-3.7.0.gem differ