diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04182cfb..7527686e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 * [`Mix.Pow.Mix.Tasks.Pow.Phoenix.Mailer.Gen.Templates`] Now injects `config/config.exs` and `WEB_PATH/WEB_APP.ex`
 * [`Mix.Pow.Mix.Tasks.Pow.Phoenix.Gen.Templates`] Now injects `config/config.exs`
 * [`Mix.Tasks.Pow.Phoenix.Install`] Now injects `config/config.exs`, `WEB_PATH/endpoint.ex`, and `WEB_PATH/router.ex`
+* [`Phoenix.Router.Route`] Updated to support Phoenix 1.7 breaking changes
 
 ### Documentation
 
diff --git a/guides/lock_users.md b/guides/lock_users.md
index 8360891b..d9df57fe 100644
--- a/guides/lock_users.md
+++ b/guides/lock_users.md
@@ -282,7 +282,7 @@ defmodule MyAppWeb.Admin.UserControllerTest do
 
       conn = post(conn, Routes.admin_user_path(conn, :lock, user.id))
 
-      assert get_flash(conn, :info) == "User has been locked."
+      assert Phoenix.Flash.get(conn.assigns.flash, :info) == "User has been locked."
       assert redirected_to(conn) == "/"
     end
 
@@ -291,7 +291,7 @@ defmodule MyAppWeb.Admin.UserControllerTest do
 
       conn = post(conn, Routes.admin_user_path(conn, :lock, user.id))
 
-      assert get_flash(conn, :error) == "User couldn't be locked."
+      assert Phoenix.Flash.get(conn.assigns.flash, :error) == "User couldn't be locked."
       assert redirected_to(conn) == "/"
     end
   end
@@ -345,7 +345,7 @@ defmodule MyAppWeb.EnsureUserNotLockedPlugTest do
       |> Pow.Plug.assign_current_user(@locked_user, @pow_config)
       |> EnsureUserNotLockedPlug.call(opts)
 
-    assert get_flash(conn, :error) == "Sorry, your account is locked."
+    assert Phoenix.Flash.get(conn.assigns.flash, :error) == "Sorry, your account is locked."
     assert redirected_to(conn) == Routes.pow_session_path(conn, :new)
   end
 
@@ -356,7 +356,7 @@ defmodule MyAppWeb.EnsureUserNotLockedPlugTest do
     |> Plug.Test.conn("/")
     |> Plug.Test.init_test_session(%{})
     |> Pow.Plug.put_config(pow_config)
-    |> Phoenix.Controller.fetch_flash()
+    |> fetch_flash()
   end
 end
 ```
@@ -377,7 +377,7 @@ defmodule MyAppWeb.ResetPasswordControllerTest do
 
       conn = post(conn, Routes.reset_password_path(conn, :create, @valid_params))
 
-      assert get_flash(conn, :info)
+      assert Phoenix.Flash.get(conn.assigns.flash, :info)
       assert redirected_to(conn) == Routes.pow_session_path(conn, :new)
 
       assert count_reset_password_tokens_for_user(conn, user) == 1
@@ -388,7 +388,7 @@ defmodule MyAppWeb.ResetPasswordControllerTest do
 
       conn = post(conn, Routes.reset_password_path(conn, :create, @valid_params))
 
-      assert get_flash(conn, :info)
+      assert Phoenix.Flash.get(conn.assigns.flash, :info)
       assert redirected_to(conn) == Routes.pow_session_path(conn, :new)
 
       assert count_reset_password_tokens_for_user(conn, user) == 0
diff --git a/guides/multitenancy.md b/guides/multitenancy.md
index 67532140..fa765686 100644
--- a/guides/multitenancy.md
+++ b/guides/multitenancy.md
@@ -231,7 +231,7 @@ defmodule MyAppWeb.Pow.TriplexSessionPlugTest do
     :get
     |> Plug.Test.conn("/")
     |> Plug.Test.init_test_session(%{})
-    |> Phoenix.Controller.fetch_flash()
+    |> fetch_flash()
   end
 
   defp set_triplex_tenant(conn, tenant) do
@@ -311,7 +311,7 @@ defmodule MyAppWeb.AccountControllerTest do
     test "with valid params", %{conn: conn} do
       conn = post(conn, Routes.account_path(conn, :create, @valid_params))
 
-      assert get_flash(conn, :info) == "Welcome!"
+      assert Phoenix.Flash.get(conn.assigns.flash, :info) == "Welcome!"
       assert redirected_to(conn) == Routes.page_path(conn, :index)
 
       assert Pow.Plug.current_user(conn)
diff --git a/guides/user_roles.md b/guides/user_roles.md
index 0dc0bce3..d4b449bb 100644
--- a/guides/user_roles.md
+++ b/guides/user_roles.md
@@ -267,7 +267,7 @@ defmodule MyAppWeb.EnsureRolePlugTest do
     conn = EnsureRolePlug.call(conn, opts)
 
     assert conn.halted
-    assert Phoenix.ConnTest.redirected_to(conn) == Routes.page_path(conn, :index)
+    assert redirected_to(conn) == Routes.page_path(conn, :index)
   end
 
   test "call/2 with non-admin user", %{conn: conn} do
@@ -278,7 +278,7 @@ defmodule MyAppWeb.EnsureRolePlugTest do
       |> EnsureRolePlug.call(opts)
 
     assert conn.halted
-    assert Phoenix.ConnTest.redirected_to(conn) == Routes.page_path(conn, :index)
+    assert redirected_to(conn) == Routes.page_path(conn, :index)
   end
 
   test "call/2 with non-admin user and multiple roles", %{conn: conn} do
diff --git a/lib/pow/phoenix/router.ex b/lib/pow/phoenix/router.ex
index 0d4050d0..d2134f10 100644
--- a/lib/pow/phoenix/router.ex
+++ b/lib/pow/phoenix/router.ex
@@ -152,14 +152,16 @@ defmodule Pow.Phoenix.Router do
   @doc false
   defmacro pow_resources(path, controller, opts) do
     quote location: :keep do
-      opts = unquote(__MODULE__).__filter_resource_actions__(@phoenix_routes, __ENV__.line, __ENV__.module, unquote(path), unquote(controller), unquote(opts))
+      phoenix_routes = Module.get_attribute(__ENV__.module, :phoenix_routes)
+      phoenix_forwards = Module.get_attribute(__ENV__.module, :phoenix_forwards)
+      opts = unquote(__MODULE__).__filter_resource_actions__({phoenix_routes, phoenix_forwards}, __ENV__.line, __ENV__.module, unquote(path), unquote(controller), unquote(opts))
 
       resources unquote(path), unquote(controller), opts
     end
   end
 
   @doc false
-  def __filter_resource_actions__(phoenix_routes, line, module, path, controller, options) do
+  def __filter_resource_actions__({phoenix_routes, phoenix_forwards}, line, module, path, controller, options) do
     resource    = Phoenix.Router.Resource.build(path, controller, options)
     param       = resource.param
     action_opts =
@@ -188,43 +190,53 @@ defmodule Pow.Phoenix.Router do
       Enum.reject(resource.actions, fn plug_opts ->
         {verb, path} = Keyword.fetch!(action_opts, plug_opts)
 
-        __route_defined__(phoenix_routes, line, module, verb, path, controller, plug_opts, options)
+        __route_defined__({phoenix_routes, phoenix_forwards}, line, module, verb, path, controller, plug_opts, options)
       end)
 
     Keyword.put(options, :only, only)
   end
 
   @doc false
-  def __route_defined__(phoenix_routes, line, module, verb, path, plug, plug_opts, options) do
+  def __route_defined__({phoenix_routes, phoenix_forwards}, line, module, verb, path, plug, plug_opts, options) do
     line
     |> Phoenix.Router.Scope.route(module, :match, verb, path, plug, plug_opts, options)
     |> case do
       %{plug_opts: _, helper: _} = route ->
-        any_matching_routes?(phoenix_routes, route, [:plug_opts, :helper])
+        any_matching_routes?(phoenix_routes, phoenix_forwards, route, [:plug_opts, :helper])
 
       # TODO: Remove this match by 1.1.0, and up requirement for Phoenix to minimum 1.4.7
       %{opts: _, helper: _} = route ->
-        any_matching_routes?(phoenix_routes, route, [:opts, :helper])
+        any_matching_routes?(phoenix_routes, phoenix_forwards, route, [:opts, :helper])
 
       _any ->
         false
     end
   end
 
-  defp any_matching_routes?(phoenix_routes, route, keys) do
+  defp any_matching_routes?(phoenix_routes, phoenix_forwards, route, keys) do
     needle       = Map.take(route, keys)
-    route_exprs  = Phoenix.Router.Route.exprs(route)
+    route_exprs  = exprs(route, phoenix_forwards)
 
-    Enum.any?(phoenix_routes, &Map.take(&1, keys) == needle && equal_binding_length?(&1, route_exprs))
+    Enum.any?(phoenix_routes, &Map.take(&1, keys) == needle && equal_binding_length?(&1, route_exprs, phoenix_forwards))
   end
 
-  defp equal_binding_length?(route, exprs) do
-    length(exprs.binding) == length(Phoenix.Router.Route.exprs(route).binding)
+  defp equal_binding_length?(route, exprs, forwards) do
+    length(exprs.binding) == length(exprs(route, forwards).binding)
+  end
+
+  # TODO: Remove when Phoenix 1.7 is required
+  if Code.ensure_loaded?(Phoenix.Router.Route) and function_exported?(Phoenix.Router.Route, :exprs, 1) do
+    def exprs(route, _forwards), do: Phoenix.Router.Route.exprs(route)
+  else
+    defdelegate exprs(route, forwards), to: Phoenix.Router.Route
   end
 
   defmacro pow_route(verb, path, plug, plug_opts, options \\ []) do
     quote location: :keep do
-      unless unquote(__MODULE__).__route_defined__(@phoenix_routes, __ENV__.line, __ENV__.module, unquote(verb), unquote(path), unquote(plug), unquote(plug_opts), unquote(options)) do
+      phoenix_routes = Module.get_attribute(__ENV__.module, :phoenix_routes)
+      phoenix_forwards = Module.get_attribute(__ENV__.module, :phoenix_forwards)
+
+      unless unquote(__MODULE__).__route_defined__({phoenix_routes, phoenix_forwards}, __ENV__.line, __ENV__.module, unquote(verb), unquote(path), unquote(plug), unquote(plug_opts), unquote(options)) do
         unquote(verb)(unquote(path), unquote(plug), unquote(plug_opts), unquote(options))
       end
     end
diff --git a/test/pow/phoenix/controllers/plug_error_handler_test.exs b/test/pow/phoenix/controllers/plug_error_handler_test.exs
index 2d4d7d62..29969b79 100644
--- a/test/pow/phoenix/controllers/plug_error_handler_test.exs
+++ b/test/pow/phoenix/controllers/plug_error_handler_test.exs
@@ -2,7 +2,9 @@ defmodule Pow.Phoenix.PlugErrorHandlerTest do
   use ExUnit.Case
   doctest Pow.Phoenix.PlugErrorHandler
 
-  alias Phoenix.ConnTest
+  import Phoenix.ConnTest, except: [get_flash: 2]
+  import Pow.Test.Phoenix.ConnCase, only: [get_flash: 2]
+
   alias Plug.Conn
   alias Pow.Phoenix.{Messages, PlugErrorHandler}
 
@@ -16,13 +18,14 @@ defmodule Pow.Phoenix.PlugErrorHandlerTest do
   defp prepare_conn(conn) do
     conn
     |> Conn.put_private(:pow_config, messages_backend: Messages)
-    |> Conn.put_private(:phoenix_flash, %{})
+    |> Conn.put_private(:phoenix_flash, %{}) # TODO: Remove when Phoenix 1.7 is required
+    |> Map.update(:assigns, %{}, & Map.put(&1, :flash, %{}))
     |> Conn.put_private(:phoenix_router, Pow.Test.Phoenix.Router)
     |> Conn.fetch_query_params()
   end
 
   setup do
-    conn = prepare_conn(ConnTest.build_conn())
+    conn = prepare_conn(build_conn())
 
     {:ok, conn: conn}
   end
@@ -30,8 +33,8 @@ defmodule Pow.Phoenix.PlugErrorHandlerTest do
   test "call/2 :not_authenticated", %{conn: conn} do
     conn = PlugErrorHandler.call(conn, :not_authenticated)
 
-    assert ConnTest.redirected_to(conn) == "/session/new?request_path=%2F"
-    assert ConnTest.get_flash(conn, :error) == :not_authenticated
+    assert redirected_to(conn) == "/session/new?request_path=%2F"
+    assert get_flash(conn, :error) == :not_authenticated
   end
 
   test "call/2 :not_authenticated doesn't override flash if message is nil", %{conn: conn} do
@@ -41,34 +44,34 @@ defmodule Pow.Phoenix.PlugErrorHandlerTest do
       |> Phoenix.Controller.put_flash(:error, "Existing error")
       |> PlugErrorHandler.call(:not_authenticated)
 
-    assert ConnTest.redirected_to(conn) == "/session/new?request_path=%2F"
-    assert ConnTest.get_flash(conn, :error) == "Existing error"
+    assert redirected_to(conn) == "/session/new?request_path=%2F"
+    assert get_flash(conn, :error) == "Existing error"
   end
 
   test "call/2 :not_authenticated doesn't set request_path if not GET request" do
     conn =
       :post
-      |> ConnTest.build_conn("/", nil)
+      |> build_conn("/", nil)
       |> prepare_conn()
       |> PlugErrorHandler.call(:not_authenticated)
 
-    assert ConnTest.redirected_to(conn) == "/session/new"
-    assert ConnTest.get_flash(conn, :error) == :not_authenticated
+    assert redirected_to(conn) == "/session/new"
+    assert get_flash(conn, :error) == :not_authenticated
 
     conn =
       :delete
-      |> ConnTest.build_conn("/", nil)
+      |> build_conn("/", nil)
       |> prepare_conn()
       |> PlugErrorHandler.call(:not_authenticated)
 
-    assert ConnTest.redirected_to(conn) == "/session/new"
-    assert ConnTest.get_flash(conn, :error) == :not_authenticated
+    assert redirected_to(conn) == "/session/new"
+    assert get_flash(conn, :error) == :not_authenticated
   end
 
   test "call/2 :already_authenticated", %{conn: conn} do
     conn = PlugErrorHandler.call(conn, :already_authenticated)
 
-    assert ConnTest.redirected_to(conn) == "/"
-    assert ConnTest.get_flash(conn, :error) == :already_authenticated
+    assert redirected_to(conn) == "/"
+    assert get_flash(conn, :error) == :already_authenticated
   end
 end
diff --git a/test/support/extensions/mocks.ex b/test/support/extensions/mocks.ex
index c9c83d72..7a126801 100644
--- a/test/support/extensions/mocks.ex
+++ b/test/support/extensions/mocks.ex
@@ -165,7 +165,8 @@ defmodule Pow.Test.ExtensionMocks do
       using do
         quote do
           import Plug.Conn
-          import Phoenix.ConnTest
+          import Phoenix.ConnTest, except: [get_flash: 2]
+          import Pow.Test.Phoenix.ConnCase, only: [get_flash: 2]
           import ControllerAssertions
 
           alias Router.Helpers, as: Routes
diff --git a/test/support/phoenix/conn_case.ex b/test/support/phoenix/conn_case.ex
index e5db0ae5..8dca49ba 100644
--- a/test/support/phoenix/conn_case.ex
+++ b/test/support/phoenix/conn_case.ex
@@ -8,7 +8,8 @@ defmodule Pow.Test.Phoenix.ConnCase do
   using do
     quote do
       import Plug.Conn
-      import Phoenix.ConnTest
+      import Phoenix.ConnTest, except: [get_flash: 2]
+      import unquote(__MODULE__), only: [get_flash: 2]
       import ControllerAssertions
 
       alias Router.Helpers, as: Routes
@@ -22,4 +23,11 @@ defmodule Pow.Test.Phoenix.ConnCase do
 
     {:ok, conn: Phoenix.ConnTest.build_conn(), ets: EtsCacheMock}
   end
+
+  # TODO: Remove when Phoenix 1.7 is required
+  if Code.ensure_loaded?(Phoenix.Flash) do
+    def get_flash(conn, key), do: Phoenix.Flash.get(conn.assigns.flash, key)
+  else
+    defdelegate get_flash(conn, key), to: Phoenix.Controller
+  end
 end
diff --git a/test/support/phoenix/controller_assertions.ex b/test/support/phoenix/controller_assertions.ex
index 112a669e..d8c7c2ce 100644
--- a/test/support/phoenix/controller_assertions.ex
+++ b/test/support/phoenix/controller_assertions.ex
@@ -1,6 +1,8 @@
 defmodule Pow.Test.Phoenix.ControllerAssertions do
   @moduledoc false
-  alias Phoenix.ConnTest
+  import Phoenix.ConnTest, except: [get_flash: 2]
+  import Pow.Test.Phoenix.ConnCase, only: [get_flash: 2]
+
   alias Pow.Phoenix.{Messages, Routes}
 
   @spec assert_authenticated_redirect(Plug.Conn.t()) :: Macro.t()
@@ -8,8 +10,8 @@ defmodule Pow.Test.Phoenix.ControllerAssertions do
     quote do
       routes = Keyword.get(unquote(conn).private.pow_config, :routes_backend, Routes)
 
-      assert ConnTest.redirected_to(unquote(conn)) == routes.after_sign_in_path(unquote(conn))
-      assert ConnTest.get_flash(unquote(conn), :error) == Messages.user_already_authenticated(unquote(conn))
+      assert redirected_to(unquote(conn)) == routes.after_sign_in_path(unquote(conn))
+      assert get_flash(unquote(conn), :error) == Messages.user_already_authenticated(unquote(conn))
     end
   end
 
@@ -24,8 +26,8 @@ defmodule Pow.Test.Phoenix.ControllerAssertions do
           _any  -> router.pow_session_path(conn, :new)
         end
 
-      assert ConnTest.redirected_to(conn) == expected_path
-      assert ConnTest.get_flash(conn, :error) == Messages.user_not_authenticated(conn)
+      assert redirected_to(conn) == expected_path
+      assert get_flash(conn, :error) == Messages.user_not_authenticated(conn)
     end
   end
 end