diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 65e103de583..da92cdf3f12 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -118,7 +118,7 @@ jobs:
         run: pixi run install
 
       - name: Setup Micromamba
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: modflow6/environment.yml
           cache-downloads: true
@@ -380,7 +380,7 @@ jobs:
         run: sudo ./install.sh --all-users
 
       - name: Setup Micromamba
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: modflow6/environment.yml
           cache-downloads: true
@@ -523,7 +523,7 @@ jobs:
           path: modflow6-examples
 
       - name: Setup Micromamba
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: modflow6/environment.yml
           cache-downloads: true
diff --git a/.github/workflows/release_dispatch.yml b/.github/workflows/release_dispatch.yml
index 1bfc1a0bd52..b58e6c1a4cd 100644
--- a/.github/workflows/release_dispatch.yml
+++ b/.github/workflows/release_dispatch.yml
@@ -185,7 +185,7 @@ jobs:
           ref: ${{ github.ref }}
 
       - name: Setup Micromamba
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: environment.yml
           cache-downloads: true
@@ -245,7 +245,7 @@ jobs:
           path: modflow6
 
       - name: Setup Micromamba
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: modflow6/environment.yml
           cache-downloads: true