diff --git a/.github/workflows/install-test.yml b/.github/workflows/install-test.yml
index 19497d0..8699ea2 100644
--- a/.github/workflows/install-test.yml
+++ b/.github/workflows/install-test.yml
@@ -30,18 +30,29 @@ jobs:
         with:
           submodules: recursive
 
-      - name: Cache Bun binary
+      - name: Cache Bun
         uses: actions/cache@v3
         with:
-          path: ~/.bun
+          path: |
+            ~/.bun
+            ${{ env.BUN_INSTALL }}
           key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lockb') }}
-          restore-keys: ${{ runner.os }}-bun-
+          restore-keys: |
+            ${{ runner.os }}-bun-
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
         with:
           bun-version: latest
 
+      - name: Cache QMD Database
+        uses: actions/cache@v3
+        with:
+          path: ~/.cache/qmd
+          key: ${{ runner.os }}-qmd-db
+          restore-keys: |
+            ${{ runner.os }}-qmd-
+
       - name: Run installer
         run: ${{ matrix.install_cmd }}
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0586502..753f2a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,16 @@
+## [0.5.1] - 2026-03-09
+
+### Fixed
+
+- fix: add missing cline and copilot to default agents seed
+- fix(install): remove temp HOME isolation breaking PATH dependencies
+
+### Performance
+
+- perf: add caching and optimize Bun install for faster CI workflows
+
+---
+
 ## [0.5.0] - 2026-03-09
 
 ### Added
diff --git a/package.json b/package.json
index 881a762..0553a5b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "smriti",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "Smriti - Unified memory layer across all AI agents",
   "type": "module",
   "bin": {