diff --git a/.drone.jsonnet b/.drone.jsonnet
index 5170ca5..7ea8ce1 100644
--- a/.drone.jsonnet
+++ b/.drone.jsonnet
@@ -21,7 +21,7 @@ local PipelineBuild(os='linux', arch='amd64') = {
         username: { from_secret: "docker_username" },
         password: { from_secret: "docker_password" },
         build_args: {
-          KANBOARD_VERSION: "${DRONE_TAG%??}",
+          KANBOARD_VERSION: "${DRONE_TAG%-*}",
         },
       },
     },
@@ -37,7 +37,7 @@ local PipelineBuild(os='linux', arch='amd64') = {
         username: { from_secret: "docker_username" },
         password: { from_secret: "docker_password" },
         build_args: {
-          KANBOARD_VERSION: "${DRONE_TAG%??}",
+          KANBOARD_VERSION: "${DRONE_TAG%-*}",
         },
       },
       when: {
@@ -79,7 +79,7 @@ local PipelineNotifications(depends_on=[]) = {
       pull: "always",
       settings: {
         ignore_missing: true,
-        tags: ["${DRONE_TAG}", "${DRONE_TAG%??}", "${DRONE_TAG%.*}", "${DRONE_TAG%%.*}"],
+        tags: ["${DRONE_TAG}", "${DRONE_TAG%-*}", "${DRONE_TAG%.*}", "${DRONE_TAG%%.*}"],
         username: { from_secret: "docker_username" },
         password: { from_secret: "docker_password" },
         spec: "./manifest.tmpl",
diff --git a/.drone.yml b/.drone.yml
index 65922b8..ef7a125 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -12,7 +12,7 @@ steps:
   image: plugins/docker:linux-amd64
   settings:
     build_args:
-      KANBOARD_VERSION: "${DRONE_TAG%??}"
+      KANBOARD_VERSION: "${DRONE_TAG%-*}"
     dockerfile: ./Dockerfile.linux.amd64
     dry_run: true
     password:
@@ -29,7 +29,7 @@ steps:
     auto_tag: true
     auto_tag_suffix: linux-amd64
     build_args:
-      KANBOARD_VERSION: "${DRONE_TAG%??}"
+      KANBOARD_VERSION: "${DRONE_TAG%-*}"
     dockerfile: ./Dockerfile.linux.amd64
     password:
       from_secret: docker_password
@@ -74,7 +74,7 @@ steps:
     spec: ./manifest.tmpl
     tags:
     - "${DRONE_TAG}"
-    - "${DRONE_TAG%??}"
+    - "${DRONE_TAG%-*}"
     - "${DRONE_TAG%.*}"
     - "${DRONE_TAG%%.*}"
     username:
@@ -134,6 +134,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: 8447dceeb657d620f0f0ac6dff3bdb4cc520961c7ccd7a7efc84f1401716b14d
+hmac: e4f6bc169c5cf8661b73dd9b921f6facd998f0c3035f29b53998f35315b7af32
 
 ...