diff --git a/Gemfile.lock b/Gemfile.lock
index 6ba2000..d33dcd0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,8 +8,8 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     ast (2.4.1)
     claide (1.0.3)
     claide-plugins (0.9.2)
@@ -28,7 +28,7 @@ GEM
       faraday (>= 0.9.0, < 2.0)
       faraday-http-cache (~> 2.0)
       git (~> 1.7)
-      kramdown (~> 2.3.1)
+      kramdown (~> 2.3)
       kramdown-parser-gfm (~> 1.0)
       no_proxy_fix
       octokit (~> 4.7)
@@ -117,7 +117,7 @@ GEM
     pry (0.13.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    public_suffix (4.0.6)
+    public_suffix (5.0.0)
     racc (1.5.2)
     rainbow (3.0.0)
     rake (13.0.1)