diff --git a/hooks/gsd-check-update.js b/hooks/gsd-check-update.js
index 1b7b27ed3..d9fd4bfaf 100755
--- a/hooks/gsd-check-update.js
+++ b/hooks/gsd-check-update.js
@@ -29,7 +29,10 @@ function detectConfigDir(baseDir) {
 
 const globalConfigDir = detectConfigDir(homeDir);
 const projectConfigDir = detectConfigDir(cwd);
-const cacheDir = path.join(globalConfigDir, 'cache');
+// Use a shared, tool-agnostic cache directory to avoid multi-runtime
+// resolution mismatches where check-update writes to one runtime's cache
+// but statusline reads from another (#1421).
+const cacheDir = path.join(homeDir, '.cache', 'gsd');
 const cacheFile = path.join(cacheDir, 'gsd-update-check.json');
 
 // VERSION file locations (check project first, then global)
@@ -65,10 +68,10 @@ const child = spawn(process.execPath, ['-e', `
   } catch (e) {}
 
   // Check for stale hooks — compare hook version headers against installed VERSION
-  // Hooks live inside get-shit-done/hooks/, not configDir/hooks/
+  // Hooks are installed at configDir/hooks/ (e.g. ~/.claude/hooks/) (#1421)
   let staleHooks = [];
   if (configDir) {
-    const hooksDir = path.join(configDir, 'get-shit-done', 'hooks');
+    const hooksDir = path.join(configDir, 'hooks');
     try {
       if (fs.existsSync(hooksDir)) {
         const hookFiles = fs.readdirSync(hooksDir).filter(f => f.startsWith('gsd-') && f.endsWith('.js'));
diff --git a/hooks/gsd-statusline.js b/hooks/gsd-statusline.js
index ae7025b99..32742693e 100755
--- a/hooks/gsd-statusline.js
+++ b/hooks/gsd-statusline.js
@@ -92,8 +92,12 @@ process.stdin.on('end', () => {
     }
 
     // GSD update available?
+    // Check shared cache first (#1421), fall back to runtime-specific cache for
+    // backward compatibility with older gsd-check-update.js versions.
     let gsdUpdate = '';
-    const cacheFile = path.join(claudeDir, 'cache', 'gsd-update-check.json');
+    const sharedCacheFile = path.join(homeDir, '.cache', 'gsd', 'gsd-update-check.json');
+    const legacyCacheFile = path.join(claudeDir, 'cache', 'gsd-update-check.json');
+    const cacheFile = fs.existsSync(sharedCacheFile) ? sharedCacheFile : legacyCacheFile;
     if (fs.existsSync(cacheFile)) {
       try {
         const cache = JSON.parse(fs.readFileSync(cacheFile, 'utf8'));
diff --git a/tests/core.test.cjs b/tests/core.test.cjs
index 4211b3f8e..f329bffa7 100644
--- a/tests/core.test.cjs
+++ b/tests/core.test.cjs
@@ -996,19 +996,15 @@ describe('stale hook filter', () => {
 // ─── stale hook path regression (#1249) ──────────────────────────────────────
 
 describe('stale hook path', () => {
-  test('gsd-check-update.js checks get-shit-done/hooks/ not configDir/hooks/', () => {
+  test('gsd-check-update.js checks configDir/hooks/ where hooks are actually installed (#1421)', () => {
     const content = fs.readFileSync(
       path.join(__dirname, '..', 'hooks', 'gsd-check-update.js'), 'utf-8'
     );
+    // Hooks are installed at configDir/hooks/ (e.g. ~/.claude/hooks/),
+    // not configDir/get-shit-done/hooks/ which doesn't exist (#1421)
     assert.ok(
-      content.includes("path.join(configDir, 'get-shit-done', 'hooks')"),
-      'stale hook check must look in configDir/get-shit-done/hooks/, not configDir/hooks/'
-    );
-    assert.ok(
-      !content.includes("path.join(configDir, 'hooks')") ||
-      content.indexOf("path.join(configDir, 'get-shit-done', 'hooks')") <
-      content.indexOf("path.join(configDir, 'hooks')") + 100, // allow the old pattern only if corrected version exists first
-      'should not use the wrong hooks path'
+      content.includes("path.join(configDir, 'hooks')"),
+      'stale hook check must look in configDir/hooks/ where hooks are actually installed'
     );
   });
 });