diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8912f6e..310330d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
-        poetry-version: ["1.0", "1.1.15", "1.2.2", "1.3.1"]
+        poetry-version: ["latest", "1.0", "1.1.15", "1.2.2", "1.3.1"]
         os: [ubuntu-20.04, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/action.yml b/action.yml
index 4d95612..cdf9323 100644
--- a/action.yml
+++ b/action.yml
@@ -7,11 +7,16 @@ branding:
 inputs:
   poetry-version:
     description: "The version of poetry to install"
-    required: true
-    default: "1.2.2"
+    required: false
+    default: "latest"
 runs:
   using: "composite"
   steps:
-    - run: |
+    - if: ${{ inputs.poetry-version == 'latest' }}
+      run: |
+        pip install -U poetry
+      shell: bash
+    - if: ${{ inputs.poetry-version != 'latest' }}
+      run: |
         pip install poetry==${{ inputs.poetry-version }}
       shell: bash