diff --git a/.rtd-environment.yml b/.rtd-environment.yml
new file mode 100644
index 000000000..260058973
--- /dev/null
+++ b/.rtd-environment.yml
@@ -0,0 +1,11 @@
+name: astropy
+
+channels:
+  - astropy
+
+dependencies:
+  - numpy
+  - cython
+  - matplotlib
+  - astropy-helpers
+  - astropy
diff --git a/docs/rtd-pip-requirements b/docs/rtd-pip-requirements
deleted file mode 100644
index c05f037f7..000000000
--- a/docs/rtd-pip-requirements
+++ /dev/null
@@ -1,5 +0,0 @@
-numpy
-Cython
-matplotlib
-astropy-helpers
-astropy
diff --git a/readthedocs.yml b/readthedocs.yml
new file mode 100644
index 000000000..34d4670d2
--- /dev/null
+++ b/readthedocs.yml
@@ -0,0 +1,8 @@
+conda:
+  file: .rtd-environment.yml
+
+python:
+  setup_py_install: true
+
+formats:
+  - none