diff --git a/SalishSeaTools/docs/development.rst b/SalishSeaTools/docs/development.rst
index 786f347c..7df18b02 100644
--- a/SalishSeaTools/docs/development.rst
+++ b/SalishSeaTools/docs/development.rst
@@ -69,7 +69,7 @@ and building the documentation with the commands:
 .. code-block:: bash
 
     $ cd tools
-    $ conda env create -f SalishSeaTools/environment.yaml
+    $ conda env create -f SalishSeaTools/envs/environment-dev.yaml
     $ conda activate salishsea-tools
     (salishsea-tools)$ pip install --editable SalishSeaTools
 
diff --git a/SalishSeaTools/environment.yaml b/SalishSeaTools/envs/environment-dev.yaml
similarity index 87%
rename from SalishSeaTools/environment.yaml
rename to SalishSeaTools/envs/environment-dev.yaml
index ec2dbe26..83bfbe22 100644
--- a/SalishSeaTools/environment.yaml
+++ b/SalishSeaTools/envs/environment-dev.yaml
@@ -5,11 +5,11 @@
 # of the SalishSeaTools package with:
 #
 #   $ cd tools
-#   $ conda env create -f SalishSeaTools/environment.yaml
+#   $ conda env create -f SalishSeaTools/envs/environment-dev.yaml
 #   $ conda activate salishsea-tools
 #   (salishsea-tools)$ python -m pip install --editable SalishSeaTools
 #
-# See the requirements.txt file for an exhaustive list of all of the
+# See the envs/requirements.txt file for an exhaustive list of all the
 # packages installed in the environment and their versions used in
 # recent development.
 
diff --git a/SalishSeaTools/requirements.txt b/SalishSeaTools/envs/requirements.txt
similarity index 96%
rename from SalishSeaTools/requirements.txt
rename to SalishSeaTools/envs/requirements.txt
index 1e1d83fa..b4b55c2a 100644
--- a/SalishSeaTools/requirements.txt
+++ b/SalishSeaTools/envs/requirements.txt
@@ -1,11 +1,11 @@
 # Python packages and version used in development environment
 #
 # This list is intended to be for reference only.
-# Use the conda environment description file (environment.yaml)
+# Use the conda environment description file (envs/environment-dev.yaml)
 # to create an isolated development environment.
 #
 # Create/update this file with:
-#   (salishsea-tools)$ python -m pip list --format=freeze >> SalishSeaTools/requirements.txt
+#   (salishsea-tools)$ python -m pip list --format=freeze >> SalishSeaTools/envs/requirements.txt
 
 alabaster==1.0.0
 angles==2.0
diff --git a/SalishSeaTools/setup.py b/SalishSeaTools/setup.py
index aa3d8a66..ed92853a 100644
--- a/SalishSeaTools/setup.py
+++ b/SalishSeaTools/setup.py
@@ -42,7 +42,7 @@
 except IOError:
     long_description = ''
 install_requires = [
-    # see requirements.txt for versions most recently used in development
+    # see envs/requirements.txt for versions most recently used in development
     'angles',
     'arrow>=1.0.0',
     'bottleneck',