diff --git a/.circleci/config.yml b/.circleci/config.yml
index 84a005f40501a2b727062fedd96429d684e760bb..9fd900144ddad037cdf928326102b5f71c61dfc2 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -25,7 +25,7 @@ jobs:
           name: "Sphinx Documentation Build"
           command: |
             pip install --upgrade pip
-            pip install requirements-doc.txt
+            pip install -r requirements-doc.txt
             sphinx-build docs/source docs/build