diff --git a/requirements.txt b/requirements.txt
index d96c5f6..c58f7cb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1 @@
-numpy
-scipy
-ipython
-matplotlib
-simPEG==0.1.9
+-r requirements/common.txt
diff --git a/requirements/common.txt b/requirements/common.txt
new file mode 100644
index 0000000..19be9f4
--- /dev/null
+++ b/requirements/common.txt
@@ -0,0 +1,4 @@
+numpy
+scipy
+matplotlib
+simPEG==0.1.9
diff --git a/requirements/dev.txt b/requirements/dev.txt
new file mode 100644
index 0000000..00d1ba7
--- /dev/null
+++ b/requirements/dev.txt
@@ -0,0 +1,3 @@
+-r requirements.txt
+ipython
+git+https://github.com/jakevdp/JSAnimation