diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index abcead654..496d6ac31 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,7 +16,7 @@ jobs:
       id-token: write
       pull-requests: write
     container:
-      image: ghcr.io/kiracore/docker/base-image:v0.13.19
+      image: ghcr.io/kiracore/docker/base-image:v0.14.03
     steps:
           # Work around https://github.com/actions/checkout/issues/760
           - name: Add safe.directory
@@ -200,11 +200,11 @@ jobs:
       pull-requests: write
     steps:
           # Install the cosign tool
-          # ref.: https://github.com/sigstore/cosign-installer, v3.0.1
+          # ref.: https://github.com/sigstore/cosign-installer, v3.4.0
           - name: Install cosign
-            uses: sigstore/cosign-installer@1fc5bd396d372bee37d608f955b336615edf79c8
+            uses: sigstore/cosign-installer@e1523de7571e31dbe865fd2e80c5c7c23ae71eb4
             with:
-              cosign-release: 'v2.0.0'
+              cosign-release: 'v2.2.3'
           - name: Download artifacts
             uses: actions/download-artifact@v3.0.0
             with:
diff --git a/RELEASE.md b/RELEASE.md
index 226082509..21ff0ab68 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -1,4 +1,4 @@
 Features:
 
-* Fix cosign installer
+* Update cosign installer
 * Base image update
diff --git a/docs/DOCKER.md b/docs/DOCKER.md
index e3fb77bd7..788cb27e7 100644
--- a/docs/DOCKER.md
+++ b/docs/DOCKER.md
@@ -19,7 +19,7 @@ docker rm -f $(docker ps -a -q) && \
 # echo $(globGet BASE_IMAGE_SRC)
 
 BASE_NAME="test" && \
- BASE_IMG="ghcr.io/kiracore/docker/kira-base:v0.11.4" && \
+ BASE_IMG="ghcr.io/kiracore/docker/kira-base:v0.14.03" && \
  docker run -i -t -d --privileged --net bridge --name $BASE_NAME --hostname test.local $BASE_IMG /bin/bash
 
 # Find container by name
@@ -32,4 +32,4 @@ docker start -i $id
 # Delete specific container
 # one liner: docker rm -f $(timeout 3 docker ps --no-trunc -aqf "name=^${BASE_NAME}$" 2> /dev/null || echo -n "")
 docker rm -f $id
-```
\ No newline at end of file
+```
diff --git a/scripts/version.sh b/scripts/version.sh
index fec91d162..77adf6184 100644
--- a/scripts/version.sh
+++ b/scripts/version.sh
@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
 
-echo "v0.12.01"
+echo "v0.12.20"