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 1e86e61017a9f70631b25ba46ad808e16f0b715e..ab8d542d99fd5f4ee6b0ac44563d13bf3d5d3095 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 8d0850540362ddfc3ecedf453f2ccc53bba21a1c..e5f82e377600d24e77e5905ce87530b6b3c1ea67 100644
--- a/setup.py
+++ b/setup.py
@@ -97,6 +97,7 @@ 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