diff --git a/.dialyzer_ignore.exs b/.dialyzer_ignore.exs
new file mode 100644
index 00000000..1c5c3c93
--- /dev/null
+++ b/.dialyzer_ignore.exs
@@ -0,0 +1,3 @@
+[
+  ~r|.*/nimble_csv/.*|
+]
diff --git a/mix.exs b/mix.exs
index 9715e685..a05f4bc4 100644
--- a/mix.exs
+++ b/mix.exs
@@ -62,6 +62,7 @@ defmodule Instream.MixProject do
         :underspecs,
         :unmatched_returns
       ],
+      ignore_warnings: ".dialyzer_ignore.exs",
       plt_core_path: "plts",
       plt_file: {:no_warn, "plts/dialyzer.plt"}
     ]