diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index cfb8db1..e888aa2 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -44,8 +44,8 @@ jobs:
       - macos: py36
         name: py36_test
 
-      - windows: py37
-        name: py37_test
+      - windows: conda
+        name: win_conda
 
       - linux: py37
         name: py37_test
@@ -63,6 +63,8 @@ jobs:
       # Only Upload to PyPI on tags
       ${{ if startsWith(variables['Build.SourceBranch'], 'refs/tags/') }}:
         pypi_connection_name : 'PyPI'
+      libraries:
+        - libfftw3-dev
       test_extras: 'test'
       test_command: 'pytest -p no:warnings --doctest-rst -m "not figure" --pyargs pyflct'
       submodules: false
diff --git a/tox.ini b/tox.ini
index 3600f49..463d106 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,6 +3,7 @@ envlist =
     py{36,37,38}
     build_docs
     codestyle
+    conda
 isolated_build = true
 requires =
     setuptools >= 30.3.0
@@ -52,3 +53,20 @@ deps =
 commands =
     pre-commit install
     pre-commit run --all-files
+
+# This env requires tox-conda.
+[testenv:conda]
+description = Use anaconda to test the package.
+pypi_filter =
+basepython = python3.8
+extras =
+deps =
+    cython
+    numpy
+    pytest-cov
+    pytest-astropy
+conda_deps =
+    fftw
+conda_channels = conda-forge
+commands =
+    pytest --pyargs pyflct {toxinidir}/docs --cov pyflct --cov-config={toxinidir}/setup.cfg {posargs}