Merge pull request #333 from donn/patch-1

Work Around pypa/pip#10237
diff --git a/docs/environment.yml b/docs/environment.yml
index 23797fd..cef4cf1 100644
--- a/docs/environment.yml
+++ b/docs/environment.yml
@@ -25,4 +25,4 @@
 - netlistsvg
 # Packages installed from PyPI
 - pip:
-  - -r file:requirements.txt
+  - -r requirements.txt
diff --git a/environment.yml b/environment.yml
index ee13527..9bd7bea 100644
--- a/environment.yml
+++ b/environment.yml
@@ -22,4 +22,4 @@
 - pip
 # Packages installed from PyPI
 - pip:
-  - -r file:requirements.txt
+  - -r requirements.txt