diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b269204..1168389 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -31,7 +31,6 @@ jobs:
 
       - name: configure conda and install code
         run: |
-          micromamba install --file requirements.dev.txt
           pip install --no-deps --no-build-isolation -e .
 
       - name: test versions
diff --git a/environment.yml b/environment.yml
index 1f61650..bbc591d 100644
--- a/environment.yml
+++ b/environment.yml
@@ -4,3 +4,10 @@ channels:
 dependencies:
   - python>=3.8
   - conda
+  # dev deps
+  - black
+  - ruff
+  - pytest
+  - python-build
+  - setuptools
+  - setuptools_scm>=8
diff --git a/requirements.dev.txt b/requirements.dev.txt
deleted file mode 100644
index 16c9c2e..0000000
--- a/requirements.dev.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-pytest
-black
-ruff
-python-build
-setuptools_scm>=8