diff --git a/.travis.yml b/.travis.yml
index 0aeec864..31aea924 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,7 +8,7 @@ python:
 env:
   - TEST_SUITE='dotvenv or check or unused or requirements'
   - TEST_SUITE='complex'
-  - TEST_SUITE='run or project or utils'
+  - TEST_SUITE='markers or run or project or utils'
 
 # command to install dependencies
 install:
@@ -31,4 +31,4 @@ stages:
   - integration
   - test
   - name: takes-forever
-    if: branch = master
\ No newline at end of file
+    if: branch = master
diff --git a/MANIFEST.in b/MANIFEST.in
index dcbdb085..e206fd3f 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -3,4 +3,5 @@ include pipenv/patched/notpip/_vendor/requests/cacert.pem
 include pipenv/vendor/pip9/_vendor/requests/cacert.pem
 include pipenv/vendor/pipreqs/stdlib
 include pipenv/vendor/pipreqs/mapping
+include pipenv/vendor/requests/cacert.pem
 include pipenv/pipenv.1
diff --git a/tests/test_pipenv.py b/tests/test_pipenv.py
index 3d463bd0..3a80e30e 100644
--- a/tests/test_pipenv.py
+++ b/tests/test_pipenv.py
@@ -602,6 +602,49 @@ requests = {version = "*", os_name = "== 'splashwear'"}
             c = p.pipenv('run python -c "import requests;"')
             assert c.return_code == 1
 
+    @pytest.mark.markers
+    @pytest.mark.install
+    def test_top_level_overrides_environment_markers(self):
+        """Top-level environment markers should take precedence.
+        """
+        with PipenvInstance() as p:
+            with open(p.pipfile_path, 'w') as f:
+                contents = """
+[packages]
+apscheduler = "*"
+funcsigs = {version = "*", os_name = "== 'splashwear'"}
+                """.strip()
+                f.write(contents)
+
+            c = p.pipenv('install')
+            assert c.return_code == 0
+
+            assert p.lockfile['default']['funcsigs']['markers'] == "os_name == 'splashwear'"
+
+    @pytest.mark.markers
+    @pytest.mark.install
+    def test_global_overrides_environment_markers(self):
+        """Empty (unconditional) dependency should take precedence.
+
+        If a dependency is specified without environment markers, it should
+        override dependencies with environment markers. In this example,
+        APScheduler requires funcsigs only on Python 2, but since funcsigs is
+        also specified as an unconditional dep, its markers should be empty.
+        """
+        with PipenvInstance() as p:
+            with open(p.pipfile_path, 'w') as f:
+                contents = """
+[packages]
+apscheduler = "*"
+funcsigs = "*"
+                """.strip()
+                f.write(contents)
+
+            c = p.pipenv('install')
+            assert c.return_code == 0
+
+            assert p.lockfile['default']['funcsigs'].get('markers', '') == ''
+
     @pytest.mark.install
     @pytest.mark.vcs
     @pytest.mark.tablib