diff --git a/Gemfile b/Gemfile
index e308455..4f8eb0e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,6 @@ gem "devise",                    "~> 4.8"
 gem "rails_admin",               "~> 3.0"
 gem "rake",                      "~> 13.0"
 gem "sassc-rails",               "~> 2.1" # for rails_admin?
-gem "twitter",                   "~> 7.0"
 gem "unicorn",                   "~> 6.0"
 
 group :production do
diff --git a/Gemfile.lock b/Gemfile.lock
index 83051b7..aa132d1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -71,14 +71,11 @@ GEM
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
     autotest-rails (4.2.1)
       ZenTest (~> 4.5)
     bcrypt (3.1.17)
     bootsnap (1.11.1)
       msgpack (~> 1.2)
-    buftok (0.2.0)
     builder (3.2.4)
     byebug (11.1.3)
     coderay (1.1.3)
@@ -91,27 +88,10 @@ GEM
       responders
       warden (~> 1.2.3)
     digest (3.1.0)
-    domain_name (0.5.20190701)
-      unf (>= 0.0.5, < 1.0.0)
-    equalizer (0.0.11)
     erubi (1.10.0)
     ffi (1.15.5)
-    ffi-compiler (1.0.1)
-      ffi (>= 1.0.0)
-      rake
     globalid (1.0.1)
       activesupport (>= 5.0)
-    http (4.4.1)
-      addressable (~> 2.3)
-      http-cookie (~> 1.0)
-      http-form_data (~> 2.2)
-      http-parser (~> 1.2.0)
-    http-cookie (1.0.4)
-      domain_name (~> 0.5)
-    http-form_data (2.3.0)
-    http-parser (1.2.3)
-      ffi-compiler (>= 1.0, < 2.0)
-    http_parser.rb (0.6.0)
     i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     kaminari (1.2.2)
@@ -133,8 +113,6 @@ GEM
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     marcel (1.0.2)
-    memoizable (0.4.2)
-      thread_safe (~> 0.3, >= 0.3.1)
     method_source (1.0.0)
     mini_mime (1.1.2)
     mini_portile2 (2.8.5)
@@ -143,8 +121,6 @@ GEM
       minitest (~> 5.10)
       railties (~> 7.0.0)
     msgpack (1.5.1)
-    multipart-post (2.1.1)
-    naught (1.1.0)
     nested_form (0.3.2)
     net-imap (0.2.3)
       digest
@@ -176,7 +152,6 @@ GEM
     pry-byebug (3.10.1)
       byebug (~> 11.0)
       pry (>= 0.13, < 0.15)
-    public_suffix (4.0.7)
     racc (1.7.3)
     rack (2.2.8.1)
     rack-test (1.1.0)
@@ -230,7 +205,6 @@ GEM
       sprockets (> 3.0)
       sprockets-rails
       tilt
-    simple_oauth (0.3.1)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -244,28 +218,13 @@ GEM
     sqlite3 (1.7.2-x86_64-linux)
     strscan (3.0.1)
     thor (1.2.1)
-    thread_safe (0.3.6)
     tilt (2.0.10)
     timeout (0.2.0)
     turbo-rails (1.0.1)
       actionpack (>= 6.0.0)
       railties (>= 6.0.0)
-    twitter (7.0.0)
-      addressable (~> 2.3)
-      buftok (~> 0.2.0)
-      equalizer (~> 0.0.11)
-      http (~> 4.0)
-      http-form_data (~> 2.0)
-      http_parser.rb (~> 0.6.0)
-      memoizable (~> 0.4.0)
-      multipart-post (~> 2.0)
-      naught (~> 1.0)
-      simple_oauth (~> 0.3.0)
     tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
-    unf (0.1.4)
-      unf_ext
-    unf_ext (0.0.8.1)
     unicorn (6.1.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)
@@ -297,7 +256,6 @@ DEPENDENCIES
   rake (~> 13.0)
   sassc-rails (~> 2.1)
   sqlite3 (~> 1.4)
-  twitter (~> 7.0)
   unicorn (~> 6.0)
 
 RUBY VERSION