diff --git a/bin/steps/cryptography b/bin/steps/cryptography
index 77a32798925996334dca8b76bd4eeacc2d61650b..aa3b0107f63bcf9b06c6dba28c0026052892a59d 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 bcrypt cffi cryptography pyOpenSSL PyOpenSSL &> /dev/null) then
+if (pip-grep -s requirements.txt bcrypt cffi cryptography pyOpenSSL PyOpenSSL requests[security] &> /dev/null) then
 
   if [ -d ".heroku/vendor/lib/libffi-3.1.1" ]; then
     export LIBFFI=$(pwd)/vendor