diff --git a/news/4195.bugfix b/news/4195.bugfix
new file mode 100644
index 00000000000..b312734c4f3
--- /dev/null
+++ b/news/4195.bugfix
@@ -0,0 +1 @@
+Fix handling of requests exceptions when dependencies are debundled.
diff --git a/src/pip/_vendor/__init__.py b/src/pip/_vendor/__init__.py
index c6f49c5cb9b..c1d9508dd4c 100644
--- a/src/pip/_vendor/__init__.py
+++ b/src/pip/_vendor/__init__.py
@@ -77,6 +77,7 @@ def vendored(modulename):
     vendored("pytoml")
     vendored("retrying")
     vendored("requests")
+    vendored("requests.exceptions")
     vendored("requests.packages")
     vendored("requests.packages.urllib3")
     vendored("requests.packages.urllib3._collections")