diff --git a/bamboo-specs/scripts/git-tag.sh b/bamboo-specs/scripts/git-tag.sh
index 07b6ff0..b9c2dbf 100755
--- a/bamboo-specs/scripts/git-tag.sh
+++ b/bamboo-specs/scripts/git-tag.sh
@@ -55,7 +55,7 @@ then
     fi
     newVersion="$(poetry version -s)"
     echo "new release on master with version:   $newVersion"
-elif [[ "$bamboo_planRepository_branchName" =~ ^(release/|hotfix/|bugfix/|feature/) ]]
+elif [[ "$bamboo_planRepository_branchName" =~ ^(release/) ]]
 then
     if check_poetry_version
     then
@@ -64,12 +64,22 @@ then
     fi
     newVersion="$(poetry version -s)"
     echo "new release on $bamboo_planRepository_branchName with version:    $newVersion"
-elif [[ "$bamboo_version_tag" != "dev" ]]
+elif [[ "$bamboo_planRepository_branchName" =~ ^(hotfix/|bugfix/|feature/) ]]
 then
-    newVersion="${bamboo_version_tag}"
-    echo "new special version build with:   $newVersion"
+    if check_poetry_version
+    then
+        echo "updating version number by one prerelease increment"
+        poetry version prerelease
+    fi
+    newVersion="$(poetry version -s)"
+    echo "new release on $bamboo_planRepository_branchName with version:    $newVersion"
+# elif [[ "$bamboo_version_tag" != "dev" ]]
+# then
+#     newVersion="$(poetry version -s)-${bamboo_version_tag}"
+#     echo "new special version build with:   $newVersion"
 else
-    newVersion="${bamboo_planRepository_1_branch}_${bamboo_buildNumber}"
+    poetry version prepatch
+    newVersion="$(poetry version -s)"
     echo "dev build with tag:   ${newVersion}"
 
 fi
diff --git a/pyproject.toml b/pyproject.toml
index f384e5f..47f04c1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "pyinfra"
-version = "1.1.0"
+version = "1.1.1a0"
 description = ""
 authors = ["Francisco Schulz <francisco.schulz@iqser.com>"]
 license = "All rights reseverd"