diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..35c184d
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,8 @@
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+github.com/adlio/trello v0.0.0-20180621142300-8a458717123e/go.mod h1:VjzhFGdnEJGih1AsIWi/yU6y01yZh0DuEWCNAyOJ1WE=
+github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
+github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
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+gopkg.in/russross/blackfriday.v2 v2.0.0 h1:+FlnIV8DSQnT7NZ43hcVKcdJdzZoeCmJj4Ql8gq5keA=
+gopkg.in/russross/blackfriday.v2 v2.0.0/go.mod h1:6sSBNz/GtOm/pJTuh5UmBK2ZHfmnxGbl2NZg1UliSOI=