diff --git a/poetry/installation/pip_installer.py b/poetry/installation/pip_installer.py
index <HASH>..<HASH> 100644
--- a/poetry/installation/pip_installer.py
+++ b/poetry/installation/pip_installer.py
@@ -229,7 +229,7 @@ class PipInstaller(BaseInstaller):
 
                     args.append(req)
 
-                    return self.run_pip(*args)
+                    return self.run(*args)
 
         if package.develop:
             args.append("-e")
pip installer: fix incorrect method call

Resolves: #<I>