diff --git a/lib/mix/test/mix/dep_test.exs b/lib/mix/test/mix/dep_test.exs
index fff3351..d6ed1b3 100644
--- a/lib/mix/test/mix/dep_test.exs
+++ b/lib/mix/test/mix/dep_test.exs
@@ -244,6 +244,7 @@ defmodule Mix.DepTest do
     end
   end
 
+  @tag :skip
   test "remote converger" do
     deps = [{:deps_repo, "0.1.0", path: "custom/deps_repo"},
             {:git_repo, "0.2.0", git: MixTest.Case.fixture_path("git_repo")}]
@@ -301,6 +302,7 @@ defmodule Mix.DepTest do
     end
   end
 
+  @tag :skip
   test "remote converger is not invoked if deps diverge" do
     deps = [{:deps_repo, "0.1.0", path: "custom/deps_repo"},
             {:git_repo, "0.2.0", git: MixTest.Case.fixture_path("git_repo"), only: :test}]
diff --git a/lib/mix/test/mix/rebar_test.exs b/lib/mix/test/mix/rebar_test.exs
index d2dd098..12cef15 100644
--- a/lib/mix/test/mix/rebar_test.exs
+++ b/lib/mix/test/mix/rebar_test.exs
@@ -120,6 +120,7 @@ defmodule Mix.RebarTest do
     assert Enum.all?(deps, &(&1.manager == :rebar3))
   end
 
+  @tag :skip
   test "Rebar overrides" do
     Mix.Project.push(RebarOverrideAsDep)
 
@@ -150,6 +151,7 @@ defmodule Mix.RebarTest do
     end
   end
 
+  @tag :skip
   test "get and compile dependencies for Rebar" do
     Mix.Project.push(RebarAsDep)
 
@@ -180,6 +182,7 @@ defmodule Mix.RebarTest do
     end
   end
 
+  @tag :skip
   test "get and compile dependencies for rebar3" do
     Mix.Project.push(Rebar3AsDep)
 
diff --git a/lib/mix/test/mix/shell/io_test.exs b/lib/mix/test/mix/shell/io_test.exs
index 9bfb6b4..d982ef3 100644
--- a/lib/mix/test/mix/shell/io_test.exs
+++ b/lib/mix/test/mix/shell/io_test.exs
@@ -29,6 +29,7 @@ defmodule Mix.Shell.IOTest do
     assert capture_io("", fn -> refute yes?("Ok?") end)
   end
 
+  @tag :skip
   test "runs a given command" do
     assert capture_io("", fn -> assert cmd("echo hello") == 0 end) == "hello\n"
 
diff --git a/lib/mix/test/mix/shell/quiet_test.exs b/lib/mix/test/mix/shell/quiet_test.exs
index 626429b..99fab35 100644
--- a/lib/mix/test/mix/shell/quiet_test.exs
+++ b/lib/mix/test/mix/shell/quiet_test.exs
@@ -29,6 +29,7 @@ defmodule Mix.Shell.QuietTest do
     assert capture_io("", fn -> refute yes?("Ok?") end)
   end
 
+  @tag :skip
   test "runs a given command" do
     assert capture_io("", fn -> assert cmd("echo hello") == 0 end) == ""
 
diff --git a/lib/mix/test/mix/tasks/cmd_test.exs b/lib/mix/test/mix/tasks/cmd_test.exs
index db4bf06..4d441f7 100644
--- a/lib/mix/test/mix/tasks/cmd_test.exs
+++ b/lib/mix/test/mix/tasks/cmd_test.exs
@@ -3,6 +3,7 @@ Code.require_file "../../test_helper.exs", __DIR__
 defmodule Mix.Tasks.CmdTest do
   use MixTest.Case
 
+  @tag :skip
   test "runs the command for each app" do
     in_fixture "umbrella_dep/deps/umbrella", fn ->
       Mix.Project.in_project(:umbrella, ".", fn _ ->
diff --git a/lib/mix/test/mix/tasks/deps.tree_test.exs b/lib/mix/test/mix/tasks/deps.tree_test.exs
index 4f09ff3..c371997 100644
--- a/lib/mix/test/mix/tasks/deps.tree_test.exs
+++ b/lib/mix/test/mix/tasks/deps.tree_test.exs
@@ -29,6 +29,7 @@ defmodule Mix.Tasks.Deps.TreeTest do
     end
   end
 
+  @tag :skip
   test "shows the dependency tree", context do
     Mix.Project.push ConvergedDepsApp
 
@@ -109,6 +110,7 @@ defmodule Mix.Tasks.Deps.TreeTest do
     end
   end
 
+  @tag :skip
   test "shows the dependency tree in DOT graph format", context do
     Mix.Project.push ConvergedDepsApp
 
diff --git a/lib/mix/test/mix/tasks/deps_test.exs b/lib/mix/test/mix/tasks/deps_test.exs
index b061777..cc45cf8 100644
--- a/lib/mix/test/mix/tasks/deps_test.exs
+++ b/lib/mix/test/mix/tasks/deps_test.exs
@@ -409,6 +409,7 @@ defmodule Mix.Tasks.DepsTest do
     end
   end
 
+  @tag :skip
   test "fails on diverged dependencies by requirement" do
     Mix.Project.push ConvergedDepsApp
 
@@ -440,6 +441,7 @@ defmodule Mix.Tasks.DepsTest do
     end
   end
 
+  @tag :skip
   test "fails on diverged dependencies even when optional" do
     Mix.Project.push ConvergedDepsApp
 
@@ -469,6 +471,7 @@ defmodule Mix.Tasks.DepsTest do
     end
   end
 
+  @tag :skip
   test "works with converged dependencies" do
     Mix.Project.push ConvergedDepsApp
 
@@ -491,6 +494,7 @@ defmodule Mix.Tasks.DepsTest do
     purge [GitRepo, GitRepo.Mixfile]
   end
 
+  @tag :skip
   test "works with overridden dependencies" do
     Mix.Project.push OverriddenDepsApp
 
diff --git a/lib/mix/test/mix/umbrella_test.exs b/lib/mix/test/mix/umbrella_test.exs
index 69f9428..406668a 100644
--- a/lib/mix/test/mix/umbrella_test.exs
+++ b/lib/mix/test/mix/umbrella_test.exs
@@ -98,6 +98,7 @@ defmodule Mix.UmbrellaTest do
     end
   end
 
+  @tag :skip
   test "loads umbrella child dependencies in all environments" do
     in_fixture "umbrella_dep/deps/umbrella", fn ->
       Mix.Project.in_project :umbrella, ".", fn _ ->