diff --git a/.github/workflows/build-so.yaml b/.github/workflows/build-so.yaml
index afaad6b..ee2c123 100644
--- a/.github/workflows/build-so.yaml
+++ b/.github/workflows/build-so.yaml
@@ -33,21 +33,16 @@ jobs:
       uses: actions/checkout@v4
       with:
         ref: stable
-    - name: Install MUSL toolchain
-      run: |
-        sudo apt-get install -y musl-dev musl-tools
-        sudo ln -s "/usr/bin/g++" "/usr/bin/musl-g++"
-        rustup target add x86_64-unknown-linux-musl
     - name: Build extensions
       run: |
         cd jyafn-ext
-        make install
+        make build
     - name: Artifact update
       uses: actions/upload-artifact@v4
       with:
         name: extensions-linux-x64
         if-no-files-found: error
-        path: ~/.jyafn/extensions/*.so
+        path: ./target/extensions/*.so
         retention-days: 1
 
   build-dylib:
@@ -78,13 +73,13 @@ jobs:
     - name: Build extensions
       run: |
         cd jyafn-ext
-        make install
+        make build
     - name: Artifact update
       uses: actions/upload-artifact@v4
       with:
         name: extensions-macos-arm64
         if-no-files-found: error
-        path: ~/.jyafn/extensions/*.dylib
+        path: ./target/extensions/*.dylib
         retention-days: 1
 
   release:
diff --git a/jyafn-ext/Makefile b/jyafn-ext/Makefile
index bcaa733..d17216e 100644
--- a/jyafn-ext/Makefile
+++ b/jyafn-ext/Makefile
@@ -1,2 +1,2 @@
-install:
-	./install-all.sh
+build:
+	./build-all.sh
diff --git a/jyafn-ext/install-all.sh b/jyafn-ext/build-all.sh
similarity index 95%
rename from jyafn-ext/install-all.sh
rename to jyafn-ext/build-all.sh
index 78464f2..bc3b536 100755
--- a/jyafn-ext/install-all.sh
+++ b/jyafn-ext/build-all.sh
@@ -17,6 +17,6 @@ done
 for extension in $extensions; do
     echo Building $extension...
     cd $extension
-    make install
+    make build
     cd $BASEDIR
 done
diff --git a/jyafn-ext/extensions/dummy/Makefile b/jyafn-ext/extensions/dummy/Makefile
index c87306d..3aff779 100644
--- a/jyafn-ext/extensions/dummy/Makefile
+++ b/jyafn-ext/extensions/dummy/Makefile
@@ -13,20 +13,18 @@ ROOT := $(shell cargo metadata --format-version=1 | jq -r '.workspace_root')
 UNAME := $(shell uname)
 
 ifeq ($(UNAME), Linux)
-	BUILD := RUSTFLAGS="-C target-feature=-crt-static" \
-		cargo build --release --target x86_64-unknown-linux-musl
 	EXT := so
-	LIBPATH := $(ROOT)/target/x86_64-unknown-linux-musl/release/lib$(LIBNAME).$(EXT)
+	LIBPATH := $(ROOT)/target/release/lib$(LIBNAME).$(EXT)
 else ifeq ($(UNAME), Darwin)
-	BUILD := cargo build --release
 	EXT := dylib
 	LIBPATH := $(ROOT)/target/release/lib$(LIBNAME).$(EXT)
 endif
 
 build:
-	$(BUILD)
+	cargo build --release
+	mkdir -p $(ROOT)/target/extensions/
+	cp $(LIBPATH) $(ROOT)/target/extensions/$(NAME).$(EXT)
 
 install: build
 	mkdir -p ~/.jyafn/extensions/
-	cp $(LIBPATH) ~/.jyafn/extensions/$(NAME)-$(VERSION).$(EXT)
-	cp $(LIBPATH) ~/.jyafn/extensions/$(NAME)-latest.$(EXT)
+	cp $(ROOT)/target/extensions/$(NAME).$(EXT) ~/.jyafn/extensions/$(NAME)-$(VERSION).$(EXT)
diff --git a/jyafn-ext/extensions/lightgbm/Makefile b/jyafn-ext/extensions/lightgbm/Makefile
index c87306d..3aff779 100644
--- a/jyafn-ext/extensions/lightgbm/Makefile
+++ b/jyafn-ext/extensions/lightgbm/Makefile
@@ -13,20 +13,18 @@ ROOT := $(shell cargo metadata --format-version=1 | jq -r '.workspace_root')
 UNAME := $(shell uname)
 
 ifeq ($(UNAME), Linux)
-	BUILD := RUSTFLAGS="-C target-feature=-crt-static" \
-		cargo build --release --target x86_64-unknown-linux-musl
 	EXT := so
-	LIBPATH := $(ROOT)/target/x86_64-unknown-linux-musl/release/lib$(LIBNAME).$(EXT)
+	LIBPATH := $(ROOT)/target/release/lib$(LIBNAME).$(EXT)
 else ifeq ($(UNAME), Darwin)
-	BUILD := cargo build --release
 	EXT := dylib
 	LIBPATH := $(ROOT)/target/release/lib$(LIBNAME).$(EXT)
 endif
 
 build:
-	$(BUILD)
+	cargo build --release
+	mkdir -p $(ROOT)/target/extensions/
+	cp $(LIBPATH) $(ROOT)/target/extensions/$(NAME).$(EXT)
 
 install: build
 	mkdir -p ~/.jyafn/extensions/
-	cp $(LIBPATH) ~/.jyafn/extensions/$(NAME)-$(VERSION).$(EXT)
-	cp $(LIBPATH) ~/.jyafn/extensions/$(NAME)-latest.$(EXT)
+	cp $(ROOT)/target/extensions/$(NAME).$(EXT) ~/.jyafn/extensions/$(NAME)-$(VERSION).$(EXT)