diff --git a/requirements.txt b/requirements.txt
index a015b81..51efcfe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 numpy
-M2Crypto
+six
+pyOpenSSL
 pykerberos
-python-cjson
-http://software.ligo.org/lscsoft/source/glue-1.49.1.tar.gz
-http://software.ligo.org/lscsoft/source/dqsegdb-1.2.2.tar.gz
+lscsoft-glue
+dqsegdb
 gwpy