diff --git a/priv/resource_snapshots/test_repo/posts/20220209165617.json b/priv/resource_snapshots/test_repo/posts/20220209165617.json
new file mode 100644
index 0000000..a7fa7c8
--- /dev/null
+++ b/priv/resource_snapshots/test_repo/posts/20220209165617.json
@@ -0,0 +1,136 @@
+{
+  "attributes": [
+    {
+      "allow_nil?": false,
+      "default": "fragment(\"uuid_generate_v4()\")",
+      "generated?": false,
+      "name": "id",
+      "primary_key?": true,
+      "references": null,
+      "size": null,
+      "type": "uuid"
+    },
+    {
+      "allow_nil?": true,
+      "default": "nil",
+      "generated?": false,
+      "name": "title",
+      "primary_key?": false,
+      "references": null,
+      "size": null,
+      "type": "text"
+    },
+    {
+      "allow_nil?": true,
+      "default": "nil",
+      "generated?": false,
+      "name": "score",
+      "primary_key?": false,
+      "references": null,
+      "size": null,
+      "type": "bigint"
+    },
+    {
+      "allow_nil?": true,
+      "default": "nil",
+      "generated?": false,
+      "name": "public",
+      "primary_key?": false,
+      "references": null,
+      "size": null,
+      "type": "boolean"
+    },
+    {
+      "allow_nil?": true,
+      "default": "nil",
+      "generated?": false,
+      "name": "category",
+      "primary_key?": false,
+      "references": null,
+      "size": null,
+      "type": "citext"
+    },
+    {
+      "allow_nil?": true,
+      "default": "\"sponsored\"",
+      "generated?": false,
+      "name": "type",
+      "primary_key?": false,
+      "references": null,
+      "size": null,
+      "type": "text"
+    },
+    {
+      "allow_nil?": true,
+      "default": "nil",
+      "generated?": false,
+      "name": "price",
+      "primary_key?": false,
+      "references": null,
+      "size": null,
+      "type": "bigint"
+    },
+    {
+      "allow_nil?": true,
+      "default": "0",
+      "generated?": false,
+      "name": "decimal",
+      "primary_key?": false,
+      "references": null,
+      "size": null,
+      "type": "decimal"
+    },
+    {
+      "allow_nil?": true,
+      "default": "nil",
+      "generated?": false,
+      "name": "status",
+      "primary_key?": false,
+      "references": null,
+      "size": null,
+      "type": "text"
+    },
+    {
+      "allow_nil?": true,
+      "default": "nil",
+      "generated?": false,
+      "name": "status_enum",
+      "primary_key?": false,
+      "references": null,
+      "size": null,
+      "type": "status"
+    },
+    {
+      "allow_nil?": false,
+      "default": "fragment(\"now()\")",
+      "generated?": false,
+      "name": "created_at",
+      "primary_key?": false,
+      "references": null,
+      "size": null,
+      "type": "utc_datetime_usec"
+    }
+  ],
+  "base_filter": "type = 'sponsored'",
+  "check_constraints": [
+    {
+      "attribute": [
+        "price"
+      ],
+      "base_filter": "type = 'sponsored'",
+      "check": "price > 0",
+      "name": "price_must_be_positive"
+    }
+  ],
+  "custom_indexes": [],
+  "has_create_action": true,
+  "hash": "6640FEEABB05DCF7AAFF6D81D0F6A068332DD4729177F530A19A732510450E33",
+  "identities": [],
+  "multitenancy": {
+    "attribute": null,
+    "global": null,
+    "strategy": null
+  },
+  "repo": "Elixir.AshPostgres.TestRepo",
+  "table": "posts"
+}
\ No newline at end of file
diff --git a/priv/test_repo/migrations/20220209165137_add_status_enum.exs b/priv/test_repo/migrations/20220209165137_add_status_enum.exs
new file mode 100644
index 0000000..edec726
--- /dev/null
+++ b/priv/test_repo/migrations/20220209165137_add_status_enum.exs
@@ -0,0 +1,12 @@
+defmodule AshPostgres.TestRepo.Migrations.AddStatusEnum do
+  use Ecto.Migration
+
+  def change do
+    execute("""
+    CREATE TYPE status AS ENUM ('open', 'closed');
+    """, """
+    DROP TYPE status;
+    """
+    )
+  end
+end
diff --git a/priv/test_repo/migrations/20220209165617_migrate_resources3.exs b/priv/test_repo/migrations/20220209165617_migrate_resources3.exs
new file mode 100644
index 0000000..59af29c
--- /dev/null
+++ b/priv/test_repo/migrations/20220209165617_migrate_resources3.exs
@@ -0,0 +1,21 @@
+defmodule AshPostgres.TestRepo.Migrations.MigrateResources3 do
+  @moduledoc """
+  Updates resources based on their most recent snapshots.
+
+  This file was autogenerated with `mix ash_postgres.generate_migrations`
+  """
+
+  use Ecto.Migration
+
+  def up do
+    alter table(:posts) do
+      add :status_enum, :status
+    end
+  end
+
+  def down do
+    alter table(:posts) do
+      remove :status_enum
+    end
+  end
+end
\ No newline at end of file
diff --git a/test/filter_test.exs b/test/filter_test.exs
index 0f5de67..fab7900 100644
--- a/test/filter_test.exs
+++ b/test/filter_test.exs
@@ -408,6 +408,19 @@ defmodule AshPostgres.FilterTest do
     end
   end
 
+  describe "filtering on enum types" do
+    test "it allows simple filtering" do
+      Post
+      |> Ash.Changeset.new(status_enum: "open")
+      |> Api.create!()
+
+      assert %{status_enum: :open} =
+               Post
+               |> Ash.Query.filter(status_enum == ^"open")
+               |> Api.read_one!()
+    end
+  end
+
   describe "atom filters" do
     test "it works on matches" do
       Post
diff --git a/test/support/resources/post.ex b/test/support/resources/post.ex
index ea7b4c2..f98ad26 100644
--- a/test/support/resources/post.ex
+++ b/test/support/resources/post.ex
@@ -52,6 +52,7 @@ defmodule AshPostgres.Test.Post do
     attribute(:price, :integer)
     attribute(:decimal, :decimal, default: Decimal.new(0))
     attribute(:status, AshPostgres.Test.Types.Status)
+    attribute(:status_enum, AshPostgres.Test.Types.StatusEnum)
     create_timestamp(:created_at)
   end
 
diff --git a/test/support/types/status_enum.ex b/test/support/types/status_enum.ex
new file mode 100644
index 0000000..dfd46a2
--- /dev/null
+++ b/test/support/types/status_enum.ex
@@ -0,0 +1,6 @@
+defmodule AshPostgres.Test.Types.StatusEnum do
+  @moduledoc false
+  use Ash.Type.Enum, values: [:open, :closed]
+
+  def storage_type, do: :status
+end