diff --git a/README.md b/README.md
index d9fd31b..75e5f35 100644
--- a/README.md
+++ b/README.md
@@ -36,11 +36,11 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Build conda package
-      uses: prefix-dev/rattler-build-action@v0.2.20
+      uses: prefix-dev/rattler-build-action@v0.2.21
 ```
 
 > [!WARNING]
-> Since rattler-build is still experimental and the API can change in minor versions, please pin this action to its minor version, i.e., `prefix-dev/rattler-build-action@v0.2.20`.
+> Since rattler-build is still experimental and the API can change in minor versions, please pin this action to its minor version, i.e., `prefix-dev/rattler-build-action@v0.2.21`.
 
 > [!TIP]
 > You can use dependabot to automatically update the version of `rattler-build-action`. Add the following to your `.github/dependabot.yml`:
@@ -100,7 +100,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Build conda package
-      uses: prefix-dev/rattler-build-action@v0.2.20
+      uses: prefix-dev/rattler-build-action@v0.2.21
       with:
         # needs to be unique for each matrix entry
         artifact-name: package-${{ matrix.target-platform }}
@@ -117,7 +117,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Build conda package
-      uses: prefix-dev/rattler-build-action@v0.2.20
+      uses: prefix-dev/rattler-build-action@v0.2.21
     - run: |
         for pkg in $(find output -type f \( -name "*.conda" -o -name "*.tar.bz2" \) ); do
           echo "Uploading ${pkg}"
@@ -139,7 +139,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Build conda package
-      uses: prefix-dev/rattler-build-action@v0.2.20
+      uses: prefix-dev/rattler-build-action@v0.2.21
     - run: |
         for pkg in $(find output -type f \( -name "*.conda" -o -name "*.tar.bz2" \) ); do
           echo "Uploading ${pkg}"
@@ -167,7 +167,7 @@ jobs:
         echo '{"my.quetz.server": {"CondaToken": "${{ secrets.QUETZ_API_KEY }}"}}' > "$RATTLER_AUTH_FILE"
         echo "RATTLER_AUTH_FILE=$RATTLER_AUTH_FILE" >> "$GITHUB_ENV"
     - name: Build conda package
-      uses: prefix-dev/rattler-build-action@v0.2.20
+      uses: prefix-dev/rattler-build-action@v0.2.21
       with:
         build-args: -c conda-forge -c https://my.quetz.server/get/my-channel
 ```
diff --git a/action.yml b/action.yml
index 71ccdff..f828806 100644
--- a/action.yml
+++ b/action.yml
@@ -8,7 +8,7 @@ inputs:
   rattler-build-version:
     description: Version of rattler-build to use
     required: false
-    default: 'v0.31.0'
+    default: 'v0.31.1'
   recipe-path:
     description: Path to the recipe.yaml file
     required: true
diff --git a/project.toml b/project.toml
index a6e5b0f..cc3154b 100644
--- a/project.toml
+++ b/project.toml
@@ -1 +1 @@
-version = "0.2.20"
+version = "0.2.21"