diff --git a/letsencrypt-auto-source/letsencrypt-auto b/letsencrypt-auto-source/letsencrypt-auto
index 17ee1d509..077847e8f 100755
--- a/letsencrypt-auto-source/letsencrypt-auto
+++ b/letsencrypt-auto-source/letsencrypt-auto
@@ -562,7 +562,7 @@ BootstrapMac() {
   if ! hash virtualenv 2>/dev/null; then
     say "virtualenv not installed."
     say "Installing with pip..."
-    pip install --disable-pip-version-check virtualenv
+    pip install virtualenv
   fi
 }
 
diff --git a/letsencrypt-auto-source/pieces/bootstrappers/mac.sh b/letsencrypt-auto-source/pieces/bootstrappers/mac.sh
index 4a7e37c66..b88e96999 100755
--- a/letsencrypt-auto-source/pieces/bootstrappers/mac.sh
+++ b/letsencrypt-auto-source/pieces/bootstrappers/mac.sh
@@ -39,6 +39,6 @@ BootstrapMac() {
   if ! hash virtualenv 2>/dev/null; then
     say "virtualenv not installed."
     say "Installing with pip..."
-    pip install --disable-pip-version-check virtualenv
+    pip install virtualenv
   fi
 }