diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index b7d4fcbb..23668f5a 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -96,35 +96,35 @@ jobs:
           - helm-version: v3.18.6
             kustomize-version: v5.8.0
             plugin-secrets-version: 4.7.4
-            plugin-diff-version: 3.15.3
+            plugin-diff-version: 3.15.7
             extra-helmfile-flags: ''
           # In case you need to test some optional helmfile features,
           # enable it via extra-helmfile-flags below.
           - helm-version: v3.18.6
             kustomize-version: v5.8.0
             plugin-secrets-version: 4.7.4
-            plugin-diff-version: 3.15.3
+            plugin-diff-version: 3.15.7
             extra-helmfile-flags: '--enable-live-output'
           - helm-version: v3.21.0
             kustomize-version: v5.8.0
             plugin-secrets-version: 4.7.4
-            plugin-diff-version: 3.15.3
+            plugin-diff-version: 3.15.7
             extra-helmfile-flags: ''
           - helm-version: v3.21.0
             kustomize-version: v5.8.0
             plugin-secrets-version: 4.7.4
-            plugin-diff-version: 3.15.3
+            plugin-diff-version: 3.15.7
             extra-helmfile-flags: '--enable-live-output'
           # Helmfile now supports both Helm 3.x and Helm 4.x
           - helm-version: v4.2.0
             kustomize-version: v5.8.0
             plugin-secrets-version: 4.7.4
-            plugin-diff-version: 3.15.3
+            plugin-diff-version: 3.15.7
             extra-helmfile-flags: ''
           - helm-version: v4.2.0
             kustomize-version: v5.8.0
             plugin-secrets-version: 4.7.4
-            plugin-diff-version: 3.15.3
+            plugin-diff-version: 3.15.7
             extra-helmfile-flags: '--enable-live-output'
     steps:
       - uses: actions/checkout@v6
diff --git a/test/integration/run.sh b/test/integration/run.sh
index 2637ae0c..be0a9c26 100755
--- a/test/integration/run.sh
+++ b/test/integration/run.sh
@@ -27,7 +27,7 @@ export HELM_DATA_HOME="${helm_dir}/data"
 export HELM_HOME="${HELM_DATA_HOME}"
 export HELM_PLUGINS="${HELM_DATA_HOME}/plugins"
 export HELM_CONFIG_HOME="${helm_dir}/config"
-HELM_DIFF_VERSION="${HELM_DIFF_VERSION:-3.15.3}"
+HELM_DIFF_VERSION="${HELM_DIFF_VERSION:-3.15.7}"
 HELM_GIT_VERSION="${HELM_GIT_VERSION:-1.4.1}"
 HELM_SECRETS_VERSION="${HELM_SECRETS_VERSION:-4.7.4}"
 export GNUPGHOME="${PWD}/${dir}/.gnupg"