diff --git a/.github/workflows/pins.yml b/.github/workflows/pins.yml
index 1e83517a..cb73fb0f 100644
--- a/.github/workflows/pins.yml
+++ b/.github/workflows/pins.yml
@@ -46,7 +46,7 @@ jobs:
       - name: Get arguments
         id: args
         run: |
-          echo "keep-trees=$(jq -r '."keep-trees" | join(" ")' versions/${{ matrix.napari-version }}/conda.json)" >> $GITHUB_OUTPUT
+          echo "prune=$(jq -r '."prune" | join(" ")' versions/${{ matrix.napari-version }}/conda.json)" >> $GITHUB_OUTPUT
           echo "subdirs-json=$(jq -c '.subdirs' versions/${{ matrix.napari-version }}/conda.json)" >> $GITHUB_OUTPUT
           echo "subdirs=$(jq -r '.subdirs | join(" ")' versions/${{ matrix.napari-version }}/conda.json)" >> $GITHUB_OUTPUT
           echo "subchannel-name=napari-${{ matrix.napari-version }}" >> $GITHUB_OUTPUT
@@ -56,7 +56,7 @@ jobs:
           subchannel-name: ${{ steps.args.outputs.subchannel-name }}
           channel: conda-forge
           subdirs: ${{ steps.args.outputs.subdirs }}
-          keep-trees: ${{ steps.args.outputs.keep-trees }}
+          prune-specs: ${{ steps.args.outputs.prune }}
           gh-pages-branch: "" # Disable so we do it manually below
           served-at: "https://github.com/napari/pins/releases/download/${{ steps.args.outputs.subchannel-name }}"
       - name: Get current time
diff --git a/versions/v0.4.19/conda.json b/versions/v0.4.19/conda.json
index b6396c08..4c0b5430 100644
--- a/versions/v0.4.19/conda.json
+++ b/versions/v0.4.19/conda.json
@@ -8,7 +8,7 @@
         "win-64",
         "noarch"
     ],
-    "keep-trees": [
+    "prune": [
         "python=3.9",
         "napari=0.4.19"
     ]
diff --git a/versions/v0.5/conda.json b/versions/v0.5/conda.json
index b236ce42..b6d3d1cd 100644
--- a/versions/v0.5/conda.json
+++ b/versions/v0.5/conda.json
@@ -8,7 +8,7 @@
         "win-64",
         "noarch"
     ],
-    "keep-trees": [
+    "prune": [
         "python=3.10",
         "napari=0.5"
     ]