diff --git a/.gitignore b/.gitignore
index d26bc1d..3573f4a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /Gemfile.lock
 /.bundle/
 /coverage
+*.gemfile.lock
diff --git a/Appraisals b/Appraisals
index 6d0df39..e8663d7 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,3 +1,7 @@
+appraise "jekyll-3.4" do
+  gem "jekyll", "3.4.3"
+end
+
 appraise "jekyll-3.3" do
   gem "jekyll", "3.3.1"
 end
diff --git a/gemfiles/jekyll_3.4.gemfile b/gemfiles/jekyll_3.4.gemfile
new file mode 100644
index 0000000..24b8d64
--- /dev/null
+++ b/gemfiles/jekyll_3.4.gemfile
@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "jekyll", "3.4.3"
+
+gemspec :path => "../"
diff --git a/lib/version.rb b/lib/version.rb
index 1609918..628843c 100644
--- a/lib/version.rb
+++ b/lib/version.rb
@@ -1,3 +1,3 @@
 module JekyllToc
-  VERSION = '0.2.0'
+  VERSION = '0.2.1'
 end