diff --git a/.github/workflows/builder.yml b/.github/workflows/builder.yml
index bfe2d8af8..3a2758d17 100644
--- a/.github/workflows/builder.yml
+++ b/.github/workflows/builder.yml
@@ -133,7 +133,7 @@ jobs:
         if: needs.init.outputs.publish == 'true'
         uses: sigstore/cosign-installer@v3.8.2
         with:
-          cosign-release: "v2.4.0"
+          cosign-release: "v2.4.3"
 
       - name: Install dirhash and calc hash
         if: needs.init.outputs.publish == 'true'
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 167357e82..601aabf07 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -301,7 +301,7 @@ jobs:
       - name: Install Cosign
         uses: sigstore/cosign-installer@v3.8.2
         with:
-          cosign-release: "v2.4.0"
+          cosign-release: "v2.4.3"
       - name: Restore Python virtual environment
         id: cache-venv
         uses: actions/cache@v4.2.3
diff --git a/build.yaml b/build.yaml
index e6aec407e..068ab778a 100644
--- a/build.yaml
+++ b/build.yaml
@@ -12,7 +12,7 @@ cosign:
   base_identity: https://github.com/home-assistant/docker-base/.*
   identity: https://github.com/home-assistant/supervisor/.*
 args:
-  COSIGN_VERSION: 2.4.0
+  COSIGN_VERSION: 2.4.3
 labels:
   io.hass.type: supervisor
   org.opencontainers.image.title: Home Assistant Supervisor