diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e091ca92..c75bb476 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,8 +44,8 @@ jobs:
           - version: 14
 
         pair:
-          - elixir: 1.12
-            otp: 24.3
+          - elixir: 1.13
+            otp: 25.3
         include:
           - pg:
               version: 14
diff --git a/lib/postgrex/protocol.ex b/lib/postgrex/protocol.ex
index 19ae5b56..b6db636e 100644
--- a/lib/postgrex/protocol.ex
+++ b/lib/postgrex/protocol.ex
@@ -93,13 +93,14 @@ defmodule Postgrex.Protocol do
           {nil, opts}
 
         {true, opts} ->
-          Logger.warning(
-            "setting ssl: true on your database connection offers only limited protection, " <>
-              "as the server's certificate is not verified. Set \"ssl: [cacertfile: path/to/file]\" instead"
-          )
+          case Keyword.pop(opts, :ssl_opts) do
+            {nil, _opts} ->
+              [cacerts: :public_key.cacerts_get()] ++ default_ssl_opts()
 
-          # Read ssl_opts for backwards compatibility
-          Keyword.pop(opts, :ssl_opts, [])
+            {ssl_opts, opts} ->
+              Logger.warning(":ssl_opts is deprecated, pass opts to :ssl instead")
+              {ssl_opts, opts}
+          end
 
         {ssl_opts, opts} when is_list(ssl_opts) ->
           {Keyword.merge(default_ssl_opts(), ssl_opts), opts}
diff --git a/mix.exs b/mix.exs
index 0116d97d..d2ab887d 100644
--- a/mix.exs
+++ b/mix.exs
@@ -2,13 +2,13 @@ defmodule Postgrex.Mixfile do
   use Mix.Project
 
   @source_url "https://github.com/elixir-ecto/postgrex"
-  @version "0.20.0"
+  @version "0.21.0-dev"
 
   def project do
     [
       app: :postgrex,
       version: @version,
-      elixir: "~> 1.11",
+      elixir: "~> 1.13",
       deps: deps(),
       name: "Postgrex",
       description: "PostgreSQL driver for Elixir",