diff --git a/.github/micromamba-condarc.yml b/.github/micromamba-condarc.yml
new file mode 100644
index 000000000..852f085ba
--- /dev/null
+++ b/.github/micromamba-condarc.yml
@@ -0,0 +1,3 @@
+channels:
+  - conda-forge
+channel_priority: strict
diff --git a/.github/workflows/build-ultraplot.yml b/.github/workflows/build-ultraplot.yml
index b157adf8e..272b1342e 100644
--- a/.github/workflows/build-ultraplot.yml
+++ b/.github/workflows/build-ultraplot.yml
@@ -41,10 +41,7 @@ jobs:
         with:
           environment-file: ./environment.yml
           init-shell: bash
-          condarc: |
-            channels:
-              - conda-forge
-            channel_priority: strict
+          condarc-file: ./.github/micromamba-condarc.yml
           post-cleanup: none
           create-args: >-
             --verbose
@@ -75,10 +72,7 @@ jobs:
         with:
           environment-file: ./environment.yml
           init-shell: bash
-          condarc: |
-            channels:
-              - conda-forge
-            channel_priority: strict
+          condarc-file: ./.github/micromamba-condarc.yml
           post-cleanup: none
           create-args: >-
             --verbose