diff --git a/bin/steps/cryptography b/bin/steps/cryptography
index d44c01cd4b51bcb01fb05bfade68eca04a3ff873..fcb624c3e6ee49a0ea8bb2536249a71bef3a84a2 100755
--- a/bin/steps/cryptography
+++ b/bin/steps/cryptography
@@ -20,7 +20,7 @@ source $BIN_DIR/utils
 bpwatch start libffi_install
 
 # If pylibmc exists within requirements, use vendored cryptography.
-if (pip-grep -s requirements.txt cffi pylibmc) then
+if (pip-grep -s requirements.txt cffi pylibmc &> /dev/null) then
 
   if [ -d ".heroku/vendor/lib/libffi-3.1.1" ]; then
     export LIBFFI=$(pwd)/vendor
diff --git a/bin/steps/pylibmc b/bin/steps/pylibmc
index d3fb5575860b375a1261b9ef0200e0bf02430caf..18983029e6548305c456ae639c20a86d2a2834f7 100755
--- a/bin/steps/pylibmc
+++ b/bin/steps/pylibmc
@@ -19,7 +19,7 @@ source $BIN_DIR/utils
 bpwatch start pylibmc_install
 
 # If pylibmc exists within requirements, use vendored libmemcached.
-if (pip-grep -s requirements.txt pylibmc) then
+if (pip-grep -s requirements.txt pylibmc &> /dev/null) then
 
   if [ -d ".heroku/vendor/lib/sasl2" ]; then
     export LIBMEMCACHED=$(pwd)/vendor