diff --git a/Gemfile b/Gemfile
index b4389a3..d61f09e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -59,8 +59,8 @@ gem 'sibit', '0.25.1'
 gem 'simplecov', '0.22.0', require: false
 gem 'sinatra', '~>3.0'
 gem 'sinatra-contrib', '~>3.0'
-gem 'svg-graph', '2.1.3'
-gem 'syncem', '0.2.0'
+gem 'svg-graph', '~>2.2'
+gem 'syncem', '~>0'
 gem 'telebot', '~>0'
 gem 'telepost', '>=0.3.1'
 gem 'thin', '1.8.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index b960d2c..cb1b8cf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -284,7 +284,7 @@ GEM
       hashie
       version_gem (~> 1.1, >= 1.1.1)
     strscan (3.1.0)
-    svg-graph (2.1.3)
+    svg-graph (2.2.2)
     syncem (0.2.0)
     sys-proctable (1.3.0)
       ffi (~> 1.1)
@@ -405,8 +405,8 @@ DEPENDENCIES
   simplecov (= 0.22.0)
   sinatra (~> 3.0)
   sinatra-contrib (~> 3.0)
-  svg-graph (= 2.1.3)
-  syncem (= 0.2.0)
+  svg-graph (~> 2.2)
+  syncem (~> 0)
   telebot (~> 0)
   telepost (>= 0.3.1)
   thin (= 1.8.2)