diff --git a/poetry/installation/chooser.py b/poetry/installation/chooser.py
index 6d9e92e0b1f..1ac2d469691 100644
--- a/poetry/installation/chooser.py
+++ b/poetry/installation/chooser.py
@@ -82,7 +82,7 @@ def choose_for(self, package):  # type: (Package) -> Link
 
         return chosen
 
-    def _get_links(self, package):  # type: (Package) -> List[Link]
+    def _get_repository(self, package):
         if not package.source_type:
             if not self._pool.has_repository("pypi"):
                 repository = self._pool.repositories[0]
@@ -90,6 +90,10 @@ def _get_links(self, package):  # type: (Package) -> List[Link]
                 repository = self._pool.repository("pypi")
         else:
             repository = self._pool.repository(package.source_reference)
+        return repository
+
+    def _get_links(self, package):  # type: (Package) -> List[Link]
+        repository = self._get_repository(package)
 
         links = repository.find_links_for_package(package)
 
diff --git a/poetry/installation/executor.py b/poetry/installation/executor.py
index a65dbb4a0e1..fbc66937f09 100644
--- a/poetry/installation/executor.py
+++ b/poetry/installation/executor.py
@@ -584,9 +584,10 @@ def _download_link(self, operation, link):
 
         archive = self._chef.get_cached_archive_for_link(link)
         if archive is link:
+            repository = self._chooser._get_repository(operation.package)
             # No cached distributions was found, so we download and prepare it
             try:
-                archive = self._download_archive(operation, link)
+                archive = self._download_archive(operation, link, repository)
             except BaseException:
                 cache_directory = self._chef.get_cache_directory_for_link(link)
                 cached_file = cache_directory.joinpath(link.filename)
@@ -611,9 +612,13 @@ def _download_link(self, operation, link):
 
         return archive
 
-    def _download_archive(self, operation, link):  # type: (Operation, Link) -> Path
+    def _download_archive(self, operation, link, repository):  # type: (Operation, Link, LegacyRepository) -> Path
         response = self._authenticator.request(
-            "get", link.url, stream=True, io=self._sections.get(id(operation), self._io)
+            "get",
+            link.url,
+            stream=True,
+            io=self._sections.get(id(operation), self._io),
+            verify=getattr(repository, 'cert'),
         )
         wheel_size = response.headers.get("content-length")
         operation_message = self.get_operation_message(operation)