diff --git a/.github/actions/build-python-from-source/action.yml b/.github/actions/build-python-from-source/action.yml
index bb2d609..54af2dd 100644
--- a/.github/actions/build-python-from-source/action.yml
+++ b/.github/actions/build-python-from-source/action.yml
@@ -42,8 +42,7 @@ runs:
       run: |
         git clone https://github.com/python/cpython.git
         cd cpython
-        # Prepend 'v' to the version number to match the tag format.
-        git checkout v${{ inputs.python-version }}
+        git checkout {{ inputs.python-version }}
 
     # Configure and build Python based on the OS and the 'nogil' input.
     - name: Configure and build Python
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 933f701..eece282 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -40,8 +40,9 @@ jobs:
           #  python-version: '3.14.0-alpha.0'
           #  build-from-source: false
           # Add below those versions we want as Free Threaded releases.
+          # For these you will need the tag name see: https://github.com/python/cpython/tags
           - os: ubuntu-latest
-            python-version: '3.13.0-rc.3'
+            python-version: 'v3.13rc.3'
             build-from-source: true
             nogil: true
           #- os: windows-latest