chore: dashboard release 2.6 (#163)

diff --git a/.github/workflows/dashboard-docker-test.yaml b/.github/workflows/dashboard-docker-test.yaml
index 8425b8f..8e7c97f 100644
--- a/.github/workflows/dashboard-docker-test.yaml
+++ b/.github/workflows/dashboard-docker-test.yaml
@@ -13,7 +13,7 @@
     name: build dashboard & test
     runs-on: ubuntu-latest
     env:
-      APISIX_DASHBOARD_TAG: 2.5
+      APISIX_DASHBOARD_TAG: 2.6
     steps:
       - name: Checkout
         uses: actions/checkout@v2
diff --git a/Makefile b/Makefile
index 90701bd..182f91d 100644
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,7 @@
 IMAGE_NAME = apache/apisix
 IMAGE_TAR_NAME = apache_apisix
 
-APISIX_DASHBOARD_VERSION ?= 2.5
+APISIX_DASHBOARD_VERSION ?= 2.6
 APISIX_DASHBOARD_IMAGE_NAME = apache/apisix-dashboard
 APISIX_DASHBOARD_IMAGE_TAR_NAME = apache_apisix_dashboard
 
diff --git a/dashboard/Dockerfile b/dashboard/Dockerfile
index d6f8c76..372685d 100644
--- a/dashboard/Dockerfile
+++ b/dashboard/Dockerfile
@@ -16,7 +16,7 @@
 #
 FROM alpine:latest as pre-build
 
-ARG APISIX_DASHBOARD_VERSION=release/2.5
+ARG APISIX_DASHBOARD_VERSION=release/2.6
 
 RUN set -x \
     && apk add --no-cache --virtual .builddeps git \