diff --git a/.github/workflows/cd-linux.yaml b/.github/workflows/cd-linux.yaml
index 12d5a210..00f257f8 100644
--- a/.github/workflows/cd-linux.yaml
+++ b/.github/workflows/cd-linux.yaml
@@ -17,7 +17,7 @@ jobs:
       - name: Check version tag format
         run: |
           TAG_VERSION="${{ github.event.release.tag_name }}"
-          if [[ $TAG_VERSION =~ ^v[0-9]+.[0-9]+.[0-9]+(-rc\.[1-9])?$ ]]; then exit 0; else exit 1; fi
+          if [[ $TAG_VERSION =~ ^v[0-9]+.[0-9]+.[0-9]+(-(rc|post)\.[1-9])?$ ]]; then exit 0; else exit 1; fi
       - name: Check if version tag and package version are equal
         run: |
           TAG_VERSION="${{ github.event.release.tag_name }}"
diff --git a/.github/workflows/cd-pypi.yaml b/.github/workflows/cd-pypi.yaml
index d7b722b0..d161cdd4 100644
--- a/.github/workflows/cd-pypi.yaml
+++ b/.github/workflows/cd-pypi.yaml
@@ -17,7 +17,7 @@ jobs:
       - name: Check version tag format
         run: |
           TAG_VERSION="${{ github.event.release.tag_name }}"
-          if [[ $TAG_VERSION =~ ^v[0-9]+.[0-9]+.[0-9]+(-rc\.[1-9])?$ ]]; then exit 0; else exit 1; fi
+          if [[ $TAG_VERSION =~ ^v[0-9]+.[0-9]+.[0-9]+(-(rc|post)\.[1-9])?$ ]]; then exit 0; else exit 1; fi
       - name: Check if version tag and package version are equal
         run: |
           TAG_VERSION="${{ github.event.release.tag_name }}"
diff --git a/.github/workflows/cd-windows.yaml b/.github/workflows/cd-windows.yaml
index ecb160b2..9baf5d0b 100644
--- a/.github/workflows/cd-windows.yaml
+++ b/.github/workflows/cd-windows.yaml
@@ -17,7 +17,7 @@ jobs:
       - name: Check version tag format
         run: |
           $VERSION_TAG="${{ github.event.release.tag_name }}"
-          if ($VERSION_TAG -match "^v[0-9]+.[0-9]+.[0-9]+(-rc\.[1-9])?$") {exit 0} else {exit 1}
+          if ($VERSION_TAG -match "^v[0-9]+.[0-9]+.[0-9]+(-(rc|post)\.[1-9])?$") {exit 0} else {exit 1}
       - name: Check if version tag and package version are equal
         run: |
           $VERSION_TAG="${{ github.event.release.tag_name }}"
diff --git a/pynitrokey/VERSION b/pynitrokey/VERSION
index 8f0916f7..3219e9f6 100644
--- a/pynitrokey/VERSION
+++ b/pynitrokey/VERSION
@@ -1 +1 @@
-0.5.0
+0.5.0-post.1