diff --git a/deps.lock b/deps.lock
index 0a26848..0cc1550 100644
--- a/deps.lock
+++ b/deps.lock
@@ -1,14 +1,14 @@
 # Auto-generated by 'update'. Do not edit manually.
 tools:
     charts-build-scripts:
-        resolved_version: v1.9.18
-        resolved_at: 2026-04-22T19:23:41.424087358Z
+        resolved_version: v1.9.20
+        resolved_at: 2026-05-12T14:33:51.471834154Z
         checksums:
-            linux/amd64: 091251c2bdd5e43d61489c6a74ec9ac0d75d8287096f527d68bd3468ebabf60a
-            linux/arm64: f2798a8ee6a5dd71045b46f8ed0292aaf2f2f81d77c0c98df2bddc4c8c94d70e
+            linux/amd64: 4935603ca72fff6599bc02a7d251f8bc030d6bf9681e5dccea2c7a3ae2d51b01
+            linux/arm64: 99670273988d91932b3c2f4fc97a55657d518929e8d80d9e164d2ce5bfa23f73
     ob-charts-tool:
-        resolved_version: v0.4.1
-        resolved_at: 2026-04-24T20:21:05.846436Z
+        resolved_version: v0.5.0
+        resolved_at: 2026-05-12T14:33:52.069044959Z
         checksums:
-            linux/amd64: 79d9d6f724d9859b144d898e7b82932dbedc148778ab30a7631a19b37d62a9b6
-            linux/arm64: ff04bfc01be74466b7f958a507c9ef4fefd36616d2586a0be9b09d7a8da8e8ff
+            linux/amd64: 7387439e73e5f48a13f8f1f0800023d255f086562293bc17affb7535a093887d
+            linux/arm64: 892163556c58e2349d7209f51b9fbe44745bd99d5dec086fdb0888d6095228f0
diff --git a/dockerfiles/Dockerfile.charts b/dockerfiles/Dockerfile.charts
index 10215ec..d4902b2 100644
--- a/dockerfiles/Dockerfile.charts
+++ b/dockerfiles/Dockerfile.charts
@@ -161,16 +161,16 @@ RUN case "${ARCH}" in \
     install "${TMP_DIR}/${EXTRACT}" "/usr/local/bin/goreleaser" && \
     rm -rf "${TMP_DIR}"
 
-# charts-build-scripts v1.9.18
+# charts-build-scripts v1.9.20
 RUN case "${ARCH}" in \
-        amd64) CHECKSUM="091251c2bdd5e43d61489c6a74ec9ac0d75d8287096f527d68bd3468ebabf60a" ;; \
-        arm64) CHECKSUM="f2798a8ee6a5dd71045b46f8ed0292aaf2f2f81d77c0c98df2bddc4c8c94d70e" ;; \
+        amd64) CHECKSUM="4935603ca72fff6599bc02a7d251f8bc030d6bf9681e5dccea2c7a3ae2d51b01" ;; \
+        arm64) CHECKSUM="99670273988d91932b3c2f4fc97a55657d518929e8d80d9e164d2ce5bfa23f73" ;; \
         *) echo "Unsupported: ${ARCH}"; exit 1 ;; \
     esac && \
     export TMP_DIR=$(mktemp -d) && \
     case "${ARCH}" in \
-        amd64) DOWNLOAD_URL="https://github.com/rancher/charts-build-scripts/releases/download/v1.9.18/charts-build-scripts_linux_amd64" ;; \
-        arm64) DOWNLOAD_URL="https://github.com/rancher/charts-build-scripts/releases/download/v1.9.18/charts-build-scripts_linux_arm64" ;; \
+        amd64) DOWNLOAD_URL="https://github.com/rancher/charts-build-scripts/releases/download/v1.9.20/charts-build-scripts_linux_amd64" ;; \
+        arm64) DOWNLOAD_URL="https://github.com/rancher/charts-build-scripts/releases/download/v1.9.20/charts-build-scripts_linux_arm64" ;; \
     esac && \
     curl -fsSL --retry 3 --retry-delay 5 --retry-all-errors "${DOWNLOAD_URL}" > "${TMP_DIR}/charts-build-scripts" && \
     printf "%s  %s\n" "${CHECKSUM}" "${TMP_DIR}/charts-build-scripts" > "${TMP_DIR}/checksum.sha256" && \
@@ -178,16 +178,16 @@ RUN case "${ARCH}" in \
     install "${TMP_DIR}/charts-build-scripts" "/usr/local/bin/charts-build-scripts" && \
     rm -rf "${TMP_DIR}"
 
-# ob-charts-tool v0.4.1
+# ob-charts-tool v0.5.0
 RUN case "${ARCH}" in \
-        amd64) CHECKSUM="79d9d6f724d9859b144d898e7b82932dbedc148778ab30a7631a19b37d62a9b6" ;; \
-        arm64) CHECKSUM="ff04bfc01be74466b7f958a507c9ef4fefd36616d2586a0be9b09d7a8da8e8ff" ;; \
+        amd64) CHECKSUM="7387439e73e5f48a13f8f1f0800023d255f086562293bc17affb7535a093887d" ;; \
+        arm64) CHECKSUM="892163556c58e2349d7209f51b9fbe44745bd99d5dec086fdb0888d6095228f0" ;; \
         *) echo "Unsupported: ${ARCH}"; exit 1 ;; \
     esac && \
     export TMP_DIR=$(mktemp -d) && \
     case "${ARCH}" in \
-        amd64) DOWNLOAD_URL="https://github.com/rancher/ob-charts-tool/releases/download/v0.4.1/ob-charts-tool_linux_amd64" ;; \
-        arm64) DOWNLOAD_URL="https://github.com/rancher/ob-charts-tool/releases/download/v0.4.1/ob-charts-tool_linux_arm64" ;; \
+        amd64) DOWNLOAD_URL="https://github.com/rancher/ob-charts-tool/releases/download/v0.5.0/ob-charts-tool_linux_amd64" ;; \
+        arm64) DOWNLOAD_URL="https://github.com/rancher/ob-charts-tool/releases/download/v0.5.0/ob-charts-tool_linux_arm64" ;; \
     esac && \
     curl -fsSL --retry 3 --retry-delay 5 --retry-all-errors "${DOWNLOAD_URL}" > "${TMP_DIR}/ob-charts-tool" && \
     printf "%s  %s\n" "${CHECKSUM}" "${TMP_DIR}/ob-charts-tool" > "${TMP_DIR}/checksum.sha256" && \
diff --git a/images-lock.yaml b/images-lock.yaml
index cea6dbf..e0ffab8 100644
--- a/images-lock.yaml
+++ b/images-lock.yaml
@@ -24,7 +24,7 @@ packages:
     - zstd
     - wget
 tools:
-    charts-build-scripts: v1.9.18
+    charts-build-scripts: v1.9.20
     cosign: v3.0.6
     gh: v2.89.0
     golangci-lint: v2.11.4
@@ -32,7 +32,7 @@ tools:
     govulncheck: v1.2.0
     helmv3: v3.20.2
     helmv4: v4.1.4
-    ob-charts-tool: v0.4.1
+    ob-charts-tool: v0.5.0
     oras: v1.3.1
     slsactl: v0.1.30
 selectors: