diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index a13ebe4..91cee37 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -9,7 +9,7 @@
     {
       "name": "superpowers",
       "description": "Core skills library for Claude Code: TDD, debugging, collaboration patterns, and proven techniques",
-      "version": "5.6.0",
+      "version": "5.7.0",
       "source": "./",
       "author": {
         "name": "Jesse Vincent",
diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index c15462a..daed446 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -1,7 +1,7 @@
 {
   "name": "superpowers",
   "description": "Core skills library for Claude Code: TDD, debugging, collaboration patterns, and proven techniques",
-  "version": "5.6.0",
+  "version": "5.7.0",
   "author": {
     "name": "Jesse Vincent",
     "email": "jesse@fsck.com"
diff --git a/.cursor-plugin/plugin.json b/.cursor-plugin/plugin.json
index 41d7936..a5c40bb 100644
--- a/.cursor-plugin/plugin.json
+++ b/.cursor-plugin/plugin.json
@@ -2,7 +2,7 @@
   "name": "superpowers",
   "displayName": "Superpowers",
   "description": "Core skills library: TDD, debugging, collaboration patterns, and proven techniques",
-  "version": "5.6.0",
+  "version": "5.7.0",
   "author": {
     "name": "Jesse Vincent",
     "email": "jesse@fsck.com"
diff --git a/.github/workflows/version-check.yml b/.github/workflows/version-check.yml
new file mode 100644
index 0000000..e1af090
--- /dev/null
+++ b/.github/workflows/version-check.yml
@@ -0,0 +1,40 @@
+name: Version Consistency Check
+
+on:
+  push:
+    paths:
+      - '.claude-plugin/plugin.json'
+      - '.claude-plugin/marketplace.json'
+      - '.cursor-plugin/plugin.json'
+      - 'scripts/bump-version.sh'
+      - 'tests/version-check.sh'
+      - '.github/workflows/version-check.yml'
+    tags:
+      - 'v*.*.*'
+  pull_request:
+    paths:
+      - '.claude-plugin/plugin.json'
+      - '.claude-plugin/marketplace.json'
+      - '.cursor-plugin/plugin.json'
+      - 'scripts/bump-version.sh'
+      - 'tests/version-check.sh'
+      - '.github/workflows/version-check.yml'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  version-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Check version consistency across plugin manifests
+        run: bash tests/version-check.sh
+
+      - name: Check version matches latest git tag (on tag push)
+        if: startsWith(github.ref, 'refs/tags/')
+        run: bash tests/version-check.sh --check-tag
diff --git a/scripts/bump-version.sh b/scripts/bump-version.sh
new file mode 100755
index 0000000..441ce04
--- /dev/null
+++ b/scripts/bump-version.sh
@@ -0,0 +1,82 @@
+#!/usr/bin/env bash
+# bump-version.sh — Update the version string across all plugin manifests.
+#
+# Usage:
+#   scripts/bump-version.sh <new-version>
+#   scripts/bump-version.sh <old-version> <new-version>
+#
+# When called with one argument the script detects the current version from
+# .claude-plugin/plugin.json and replaces it everywhere.
+# When called with two arguments the first is the version to replace (useful
+# when the files are already inconsistent).
+#
+# Version files managed by this script:
+#   .claude-plugin/plugin.json
+#   .claude-plugin/marketplace.json
+#   .cursor-plugin/plugin.json
+
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+
+VERSION_FILES=(
+  ".claude-plugin/plugin.json"
+  ".claude-plugin/marketplace.json"
+  ".cursor-plugin/plugin.json"
+)
+
+usage() {
+  echo "Usage: $0 <new-version>" >&2
+  echo "       $0 <old-version> <new-version>" >&2
+  exit 1
+}
+
+if [[ $# -eq 1 ]]; then
+  NEW_VERSION="$1"
+  # Detect the current version from the primary file
+  PRIMARY="${REPO_ROOT}/${VERSION_FILES[0]}"
+  OLD_VERSION=$(grep '"version"' "$PRIMARY" | head -1 | sed 's/.*"version": *"\([^"]*\)".*/\1/' || true)
+  if [[ -z "$OLD_VERSION" ]]; then
+    echo "ERROR: Could not detect current version from $PRIMARY" >&2
+    exit 1
+  fi
+elif [[ $# -eq 2 ]]; then
+  OLD_VERSION="$1"
+  NEW_VERSION="$2"
+else
+  usage
+fi
+
+# Validate version looks like semver (N.N.N)
+if ! echo "$NEW_VERSION" | grep -qE '^[0-9]+\.[0-9]+\.[0-9]+$'; then
+  echo "ERROR: Version '$NEW_VERSION' does not look like semver (e.g. 5.7.0)" >&2
+  exit 1
+fi
+
+echo "Bumping version: $OLD_VERSION → $NEW_VERSION"
+
+ERRORS=0
+for rel_path in "${VERSION_FILES[@]}"; do
+  abs_path="${REPO_ROOT}/${rel_path}"
+  if [[ ! -f "$abs_path" ]]; then
+    echo "WARNING: $rel_path not found, skipping" >&2
+    continue
+  fi
+  if ! grep -qF "\"version\": \"${OLD_VERSION}\"" "$abs_path"; then
+    echo "ERROR: version string '${OLD_VERSION}' not found in $rel_path; cannot update" >&2
+    ERRORS=$((ERRORS + 1))
+    continue
+  fi
+  sed -i.bak "s/\"version\": \"${OLD_VERSION}\"/\"version\": \"${NEW_VERSION}\"/" "$abs_path" && rm -f "${abs_path}.bak"
+  echo "  Updated $rel_path"
+done
+
+if [[ $ERRORS -gt 0 ]]; then
+  echo "FAIL: $ERRORS file(s) could not be updated." >&2
+  exit 1
+fi
+
+echo "Done. Remember to:"
+echo "  1. Update RELEASE-NOTES.md with a new ## v${NEW_VERSION} section."
+echo "  2. Commit the changes: git commit -am \"chore: bump version to ${NEW_VERSION}\""
+echo "  3. Tag the release:     git tag v${NEW_VERSION}"
diff --git a/tests/version-check.sh b/tests/version-check.sh
new file mode 100755
index 0000000..dad2089
--- /dev/null
+++ b/tests/version-check.sh
@@ -0,0 +1,84 @@
+#!/usr/bin/env bash
+# version-check.sh — Validate that all plugin manifests declare the same version.
+#
+# Optionally validates against the latest git tag when --check-tag is passed.
+#
+# Usage:
+#   tests/version-check.sh              # consistency check only
+#   tests/version-check.sh --check-tag  # also verify versions match latest git tag
+#
+# Exit codes:
+#   0  All version files are consistent (and match the git tag if --check-tag).
+#   1  One or more version files disagree.
+
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+
+CHECK_TAG=false
+if [[ "${1:-}" == "--check-tag" ]]; then
+  CHECK_TAG=true
+fi
+
+VERSION_FILES=(
+  ".claude-plugin/plugin.json"
+  ".claude-plugin/marketplace.json"
+  ".cursor-plugin/plugin.json"
+)
+
+extract_version() {
+  grep '"version"' "$1" | head -1 | sed 's/.*"version": *"\([^"]*\)".*/\1/' || true
+}
+
+ERRORS=0
+FIRST_VERSION=""
+FIRST_FILE=""
+
+for rel_path in "${VERSION_FILES[@]}"; do
+  abs_path="${REPO_ROOT}/${rel_path}"
+  if [[ ! -f "$abs_path" ]]; then
+    echo "ERROR: $rel_path not found" >&2
+    ERRORS=$((ERRORS + 1))
+    continue
+  fi
+  ver=$(extract_version "$abs_path")
+  if [[ -z "$ver" ]]; then
+    echo "ERROR: Could not read version from $rel_path" >&2
+    ERRORS=$((ERRORS + 1))
+    continue
+  fi
+  if [[ -z "$FIRST_VERSION" ]]; then
+    FIRST_VERSION="$ver"
+    FIRST_FILE="$rel_path"
+  elif [[ "$ver" != "$FIRST_VERSION" ]]; then
+    echo "ERROR: Version mismatch: $rel_path has '$ver' but $FIRST_FILE has '$FIRST_VERSION'" >&2
+    ERRORS=$((ERRORS + 1))
+  fi
+done
+
+if [[ $ERRORS -gt 0 ]]; then
+  echo ""
+  echo "FAIL: Version files are inconsistent. Run scripts/bump-version.sh <new-version> to fix." >&2
+  exit 1
+fi
+
+echo "OK: All version files agree on version $FIRST_VERSION"
+
+if [[ "$CHECK_TAG" == true ]]; then
+  # Get the tag that points exactly at HEAD (e.g. when triggered by a tag push).
+  # Falls back gracefully if HEAD is not tagged.
+  HEAD_TAG=$(git -C "$REPO_ROOT" describe --tags --exact-match HEAD 2>/dev/null || true)
+  if [[ -z "$HEAD_TAG" ]]; then
+    echo "WARNING: HEAD is not at a semver tag; skipping tag check." >&2
+  elif ! echo "$HEAD_TAG" | grep -qE '^v[0-9]+\.[0-9]+\.[0-9]+$'; then
+    echo "WARNING: HEAD tag '$HEAD_TAG' is not a semver tag; skipping tag check." >&2
+  else
+    TAG_VERSION="${HEAD_TAG#v}"
+    if [[ "$FIRST_VERSION" != "$TAG_VERSION" ]]; then
+      echo "ERROR: Plugin version '$FIRST_VERSION' does not match HEAD tag '$HEAD_TAG'." >&2
+      echo "       Run: scripts/bump-version.sh ${TAG_VERSION}" >&2
+      exit 1
+    fi
+    echo "OK: Plugin version $FIRST_VERSION matches HEAD tag $HEAD_TAG"
+  fi
+fi