diff --git a/.test-conda-env-py3.yml b/.test-conda-env-py3.yml
index b2b8b1b47c08a0c809a666abce034ade305e1278..7d69115b9ca64f4681abfadd5ef7dcea6bae58b3 100644
--- a/.test-conda-env-py3.yml
+++ b/.test-conda-env-py3.yml
@@ -13,4 +13,5 @@ dependencies:
 - python=3.5
 - symengine=0.3.0
 - python-symengine=0.3.0
+- scipy
 # things not in here: loopy boxtree pymbolic pyfmmlib
diff --git a/requirements.txt b/requirements.txt
index 6690e3d9651bad06a8fd28e444167fe03bbb119f..675dc330ce8079beeabf49c0e221bdd4a61f6d3b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 numpy
 sympy==1.0
+scipy>=0.13
 git+https://github.com/inducer/pymbolic
 git+https://github.com/inducer/islpy
 git+https://github.com/inducer/pyopencl
diff --git a/setup.py b/setup.py
index 400d1b9fc1d135b4a4a75dda113cf0af25d7c5cc..b8edda29afa96e44cc804793f230abf4a53e362c 100644
--- a/setup.py
+++ b/setup.py
@@ -45,6 +45,7 @@ setup(name="sumpy",
           "boxtree>=2013.1",
           "pytest>=2.3",
           "six",
+          "scipy>=0.13",
 
           # If this causes issues, see:
           # https://code.google.com/p/sympy/issues/detail?id=3874