diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 10bfcd3c..456c341d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,12 +31,24 @@ jobs:
       uses: actions/checkout@v4
       with:
         submodules: recursive
-    - uses: actions/cache@v4
+    - name: Get blst submodule commit hash
+      id: blst-commit-hash
+      run: |
+        echo "::set-output name=commit-hash::$(git submodule status Utils/Sources/blst/ | cut -c2-41)"
+    - name: Cache SPM
+      uses: actions/cache@v4
       with:
         path: '**/.build'
         key: ${{ runner.os }}-spm-${{ hashFiles('**/Package.resolved') }}
         restore-keys: |
           ${{ runner.os }}-spm-
+    - name: Cache static lib files
+      uses: actions/cache@v4
+      with:
+        path: .lib
+        key: ${{ runner.os }}-libs-${{ steps.blst-commit-hash.outputs.commit-hash }}
+        restore-keys: |
+            ${{ runner.os }}-libs-
     - name: Setup Swift
       uses: SwiftyLab/setup-swift@latest
       with:
diff --git a/.gitignore b/.gitignore
index 8ca94566..e1c849fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,6 @@ DerivedData/
 .swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
 .netrc
 .vscode/settings.json
+
+# static lib files
+.lib/
diff --git a/Makefile b/Makefile
index 366d0a0e..0c0821b2 100644
--- a/Makefile
+++ b/Makefile
@@ -8,10 +8,10 @@ default: build
 githooks: .git/hooks/pre-commit
 
 .PHONY: deps
-deps: Utils/Sources/blst/lib/libblst.a
+deps: .lib/libblst.a
 
-Utils/Sources/blst/lib/libblst.a:
-	./scripts/deps.sh
+.lib/libblst.a:
+	./scripts/blst.sh
 
 .PHONY: test
 test: githooks deps
diff --git a/Utils/Package.swift b/Utils/Package.swift
index bc3c09a4..6c631524 100644
--- a/Utils/Package.swift
+++ b/Utils/Package.swift
@@ -33,12 +33,12 @@ let package = Package(
                 "blst",
             ],
             linkerSettings: [
-                .unsafeFlags(["-L../Utils/Sources/blst/lib"]),
+                .unsafeFlags(["-L../.lib"]),
             ]
         ),
         .systemLibrary(
             name: "blst",
-            path: "Sources/blst/include"
+            path: "Sources"
         ),
         .testTarget(
             name: "UtilsTests",
diff --git a/Utils/Sources/module.modulemap b/Utils/Sources/module.modulemap
new file mode 100644
index 00000000..be2b8124
--- /dev/null
+++ b/Utils/Sources/module.modulemap
@@ -0,0 +1,4 @@
+module blst {
+  header "blst/bindings/blst.h"
+  link "blst"
+}
diff --git a/scripts/deps.sh b/scripts/blst.sh
similarity index 57%
rename from scripts/deps.sh
rename to scripts/blst.sh
index e2a6d9fd..efc20977 100755
--- a/scripts/deps.sh
+++ b/scripts/blst.sh
@@ -2,21 +2,14 @@
 
 
 # Setup blst C module
-cd Utils/Sources/blst || { echo "Submodule directory not found"; exit 1; }
+CWD=$(pwd)
 
-./build.sh || { echo "Build blst library failed"; exit 1; }
+mkdir -p .lib
 
-mkdir -p include
-mkdir -p lib
+cd Utils/Sources/blst || { echo "Submodule directory not found"; exit 1; }
 
-cp libblst.a lib/
+./build.sh || { echo "Build blst library failed"; exit 1; }
 
-cat <<EOL > include/module.modulemap
-module blst {
-  header "../bindings/blst.h"
-  link "blst"
-  export *
-}
-EOL
+cp libblst.a ${CWD}/.lib
 
 echo "Setup blst successfully."