diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 46a59bcc..07f89022 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,6 +11,7 @@ jobs:
     runs-on: ubuntu-20.04
     env:
       MIX_ENV: test
+      PLUG_CRYPTO_2_0: "${{ matrix.PLUG_CRYPTO_2_0 }}"
     strategy:
       fail-fast: false
       matrix:
@@ -18,10 +19,12 @@ jobs:
           - pair:
               elixir: "1.10.4"
               otp: "21.3"
+            PLUG_CRYPTO_2_0: "false"
           - pair:
               elixir: "1.16"
               otp: "26.2"
-            lint: lint
+              lint: lint
+            PLUG_CRYPTO_2_0: "true"
     steps:
       - uses: actions/checkout@v4
 
diff --git a/mix.exs b/mix.exs
index d498f96a..a571314b 100644
--- a/mix.exs
+++ b/mix.exs
@@ -51,10 +51,10 @@ defmodule Plug.MixProject do
     ]
   end
 
-  if Version.match?(System.version(), "~> 1.10.0") do
-    defp plug_crypto_version, do: "~> 1.1.1 or ~> 1.2"
-  else
+  if System.get_env("PLUG_CRYPTO_2_0", "true") == "true" do
     defp plug_crypto_version, do: "~> 1.1.1 or ~> 1.2 or ~> 2.0"
+  else
+    defp plug_crypto_version, do: "~> 1.1.1 or ~> 1.2"
   end
 
   defp package do