diff --git a/mix.exs b/mix.exs
index a1c019ac..c5645bfe 100644
--- a/mix.exs
+++ b/mix.exs
@@ -61,7 +61,7 @@ defmodule Concentrate.MixProject do
       {:benchee, "~> 1.0", runtime: false, only: :dev},
       {:bypass, "~> 2.1", only: :test},
       {:credo, "~> 1.0", runtime: false, only: :dev},
-      {:csv, "~> 2.1"},
+      {:csv, "~> 3.2"},
       {:dialyxir, "~> 1.0", runtime: false, only: :dev},
       {:ehmon, git: "https://github.com/mbta/ehmon.git", branch: "master", only: ~w(test prod)a},
       {:ex_aws, "~> 2.4"},
diff --git a/mix.lock b/mix.lock
index 99ee6583..8e1a3488 100644
--- a/mix.lock
+++ b/mix.lock
@@ -8,7 +8,7 @@
   "cowboy_telemetry": {:hex, :cowboy_telemetry, "0.3.1", "ebd1a1d7aff97f27c66654e78ece187abdc646992714164380d8a041eda16754", [:rebar3], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "3a6efd3366130eab84ca372cbd4a7d3c3a97bdfcfb4911233b035d117063f0af"},
   "cowlib": {:hex, :cowlib, "2.11.0", "0b9ff9c346629256c42ebe1eeb769a83c6cb771a6ee5960bd110ab0b9b872063", [:make, :rebar3], [], "hexpm", "2b3e9da0b21c4565751a6d4901c20d1b4cc25cbb7fd50d91d2ab6dd287bc86a9"},
   "credo": {:hex, :credo, "1.7.0", "6119bee47272e85995598ee04f2ebbed3e947678dee048d10b5feca139435f75", [:mix], [{:bunt, "~> 0.2.1", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2.8", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "6839fcf63d1f0d1c0f450abc8564a57c43d644077ab96f2934563e68b8a769d7"},
-  "csv": {:hex, :csv, "2.4.1", "50e32749953b6bf9818dbfed81cf1190e38cdf24f95891303108087486c5925e", [:mix], [{:parallel_stream, "~> 1.0.4", [hex: :parallel_stream, repo: "hexpm", optional: false]}], "hexpm", "54508938ac67e27966b10ef49606e3ad5995d665d7fc2688efb3eab1307c9079"},
+  "csv": {:hex, :csv, "3.2.0", "dc8a2eb99a6570bf0dee26f66db99812d092f0903dc53b4748540ef524231159", [:mix], [], "hexpm", "f5ee7299a55ff84fbe623d9aea7218b800d19ecccb2b3eac2bcb327d644365ea"},
   "deep_merge": {:hex, :deep_merge, "1.0.0", "b4aa1a0d1acac393bdf38b2291af38cb1d4a52806cf7a4906f718e1feb5ee961", [:mix], [], "hexpm", "ce708e5f094b9cd4e8f2be4f00d2f4250c4095be93f8cd6d018c753894885430"},
   "dialyxir": {:hex, :dialyxir, "1.3.0", "fd1672f0922b7648ff9ce7b1b26fcf0ef56dda964a459892ad15f6b4410b5284", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "00b2a4bcd6aa8db9dcb0b38c1225b7277dca9bc370b6438715667071a304696f"},
   "ehmon": {:git, "https://github.com/mbta/ehmon.git", "1fb603262bd02d74a16183bd8f344dcace9d7561", [branch: "master"]},