diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000..63d1618
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1 @@
+custom: paypal.me/miasteinkirch
diff --git a/Gemfile.lock b/Gemfile.lock
index 90b2ed4..7b0645e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,13 +19,11 @@ GEM
     columnize (0.3.6)
     diff-lcs (1.1.3)
     i18n (0.6.0)
-    json (1.6.4)
     linecache19 (0.5.12)
       ruby_core_source (>= 0.1.4)
     multi_json (1.0.4)
     nyan-cat-formatter (0.0.5)
-    rdoc (3.12)
-      json (~> 1.4)
+    rdoc (6.1.2.1)
     rspec (2.7.0)
       rspec-core (~> 2.7.0)
       rspec-expectations (~> 2.7.0)