diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index a60944d..6ebb726 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -9,16 +9,34 @@ jobs:
     strategy:
       matrix:
         go-version:
-          - '1.17'
+          - '1.23'
         os:
           - ubuntu-latest
           - macos-latest
     runs-on: ${{ matrix.os }}
     steps:
       - name: Install Go ${{ matrix.go-version }}
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v4
         with:
           go-version: ${{ matrix.go-version }}
-      - uses: actions/checkout@v2
-      - run: make install-kiwi
-      - run: make test
+      - uses: actions/checkout@v4
+      - name: Install Kiwi dependencies
+        run: |
+          echo "Installing Kiwi C library..."
+          make install-kiwi
+          echo "Verifying installation..."
+          if [ ! -d "/usr/local/include/kiwi" ]; then
+            echo "ERROR: Kiwi headers not found at /usr/local/include/kiwi/"
+            echo "Installation failed - headers were not properly installed"
+            exit 1
+          fi
+          if ! ls /usr/local/lib/libkiwi* > /dev/null 2>&1; then
+            echo "ERROR: Kiwi libraries not found at /usr/local/lib/libkiwi*"
+            echo "Installation failed - libraries were not properly installed"
+            exit 1
+          fi
+          echo "✓ Kiwi installation verified successfully"
+          ls -la /usr/local/include/kiwi/
+          ls -la /usr/local/lib/libkiwi*
+      - name: Run tests
+        run: make test
diff --git a/go.mod b/go.mod
index 31ab263..78372b5 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,11 @@
 module github.com/codingpot/kiwigo
 
-go 1.17
+go 1.23
 
-require github.com/stretchr/testify v1.7.0
+require (
+	github.com/google/go-cmp v0.7.0
+	github.com/stretchr/testify v1.7.0
+)
 
 require (
 	github.com/davecgh/go-spew v1.1.0 // indirect
diff --git a/go.sum b/go.sum
index acb88a4..4c87ed3 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,7 @@
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
diff --git a/internal/rewindscanner.go b/internal/rewindscanner.go
index d7e1d80..3664c61 100644
--- a/internal/rewindscanner.go
+++ b/internal/rewindscanner.go
@@ -12,9 +12,13 @@ type RewindScanner struct {
 }
 
 // Rewind rewinds the underlying reader to the beginning.
-func (s *RewindScanner) Rewind() {
-	s.readSeeker.Seek(0, io.SeekStart)
+func (s *RewindScanner) Rewind() error {
+	_, err := s.readSeeker.Seek(0, io.SeekStart)
+	if err != nil {
+		return err
+	}
 	s.scanner = bufio.NewScanner(s.readSeeker)
+	return nil
 }
 
 func (s *RewindScanner) Scan() bool {
diff --git a/internal/rewindscanner_test.go b/internal/rewindscanner_test.go
index 8ccbe93..8d26858 100644
--- a/internal/rewindscanner_test.go
+++ b/internal/rewindscanner_test.go
@@ -15,7 +15,8 @@ func TestRewindScanner_Rewind(t *testing.T) {
 	scanner.Scan()
 	assert.Equal(t, "안녕하세요", scanner.Text())
 
-	scanner.Rewind()
+	err := scanner.Rewind()
+	assert.NoError(t, err)
 	scanner.Scan()
 	assert.Equal(t, "안녕하세요", scanner.Text())
 }
diff --git a/kiwi.go b/kiwi.go
index 94d327e..c40b280 100644
--- a/kiwi.go
+++ b/kiwi.go
@@ -222,7 +222,9 @@ func KiwiReaderImpl(lineNumber C.int, buffer *C.char, userData unsafe.Pointer) C
 
 	if buffer == nil {
 		if lineNumber == 0 {
-			scanner.Rewind()
+			if err := scanner.Rewind(); err != nil {
+				return C.int(-1) // Return error code
+			}
 		}
 
 		if !scanner.Scan() {
diff --git a/kiwi_example_test.go b/kiwi_example_test.go
index 8ae0b74..25e077a 100644
--- a/kiwi_example_test.go
+++ b/kiwi_example_test.go
@@ -14,7 +14,7 @@ func Example() {
 	defer k.Close() // don't forget to Close()!
 
 	results, _ := k.Analyze("안녕하세요 코딩냄비입니다. 부글부글.", 1 /*=topN*/, kiwi.KIWI_MATCH_ALL)
-	fmt.Println(results)
+	fmt.Printf("Tokens: %v, Score: %.2f\n", results[0].Tokens, results[0].Score)
 	// Output:
-	// [{[{0 NNG 안녕} {2 XSA 하} {4 EP 시} {3 EC 어요} {6 NNP 코딩냄비} {10 VCP 이} {11 EF ᆸ니다} {13 SF .} {15 NNP 부글부} {18 NNG 글} {19 SF .}] -69.74997}]
+	// Tokens: [{0 NNG 안녕} {2 XSA 하} {4 EP 시} {3 EC 어요} {6 NNP 코딩냄비} {10 VCP 이} {11 EF ᆸ니다} {13 SF .} {15 NNP 부글부} {18 NNG 글} {19 SF .}], Score: -69.75
 }
diff --git a/kiwi_test.go b/kiwi_test.go
index 970c121..f55a369 100644
--- a/kiwi_test.go
+++ b/kiwi_test.go
@@ -1,13 +1,24 @@
 package kiwi
 
 import (
+	"math"
 	"os"
 	"strings"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/stretchr/testify/assert"
 )
 
+var floatOpts = cmp.Options{
+	cmp.Comparer(func(x, y float32) bool {
+		return math.Abs(float64(x-y)) < 0.001
+	}),
+	cmp.Comparer(func(x, y float64) bool {
+		return math.Abs(x-y) < 0.001
+	}),
+}
+
 func TestKiwiVersion(t *testing.T) {
 	assert.Equal(t, KiwiVersion(), "0.10.3")
 }
@@ -59,7 +70,7 @@ func TestAnalyze(t *testing.T) {
 		},
 	}
 
-	assert.Equal(t, expected, res)
+	assert.True(t, cmp.Equal(expected, res, floatOpts))
 	assert.Equal(t, 0, kiwi.Close())
 }
 
@@ -141,7 +152,7 @@ func TestAddWord(t *testing.T) {
 		},
 	}
 
-	assert.Equal(t, expected, res)
+	assert.True(t, cmp.Equal(expected, res, floatOpts))
 	assert.Equal(t, 0, kiwi.Close())
 }
 
@@ -200,7 +211,7 @@ func TestLoadDict(t *testing.T) {
 		},
 	}
 
-	assert.Equal(t, expected, res)
+	assert.True(t, cmp.Equal(expected, res, floatOpts))
 	assert.Equal(t, 0, kiwi.Close())
 }
 
@@ -240,7 +251,7 @@ func TestLoadDict2(t *testing.T) {
 		},
 	}
 
-	assert.Equal(t, expected, res)
+	assert.True(t, cmp.Equal(expected, res, floatOpts))
 	assert.Equal(t, 0, kiwi.Close())
 }
 
@@ -256,14 +267,14 @@ func TestExtractWord(t *testing.T) {
 가능성이 크다. 다만 가사의 경우 만약 윤치호가 실제 작사한 것이 사실이라고 하더라도 일제시대가 되기도 이전인 대한제국 시절 작사된 것이기
 때문에 친일의 산물은 아니다.`)
 	wordInfos, _ := kb.ExtractWords(rs, 3 /*=minCnt*/, 3 /*=maxWordLen*/, 0.0 /*=minScore*/, -3.0 /*=posThreshold*/)
-	assert.Equal(t, []WordInfo{
-		{
-			Form:     "안익",
-			Freq:     3,
-			POSScore: -1.92593,
-			Score:    0,
-		},
-	}, wordInfos)
+	assert.Len(t, wordInfos, 1)
+	expected := WordInfo{
+		Form:     "안익",
+		Freq:     3,
+		POSScore: -1.92593,
+		Score:    0,
+	}
+	assert.True(t, cmp.Equal(expected, wordInfos[0], floatOpts))
 	assert.Equal(t, 0, kb.Close())
 }
 
@@ -272,8 +283,9 @@ func TestExtractWordwithFile(t *testing.T) {
 	file, _ := os.Open("./example/test.txt")
 
 	wordInfos, _ := kb.ExtractWords(file, 10 /*=minCnt*/, 5 /*=maxWordLen*/, 0.0 /*=minScore*/, -25.0 /*=posThreshold*/)
-	assert.Equal(t, WordInfo{
+	expected := WordInfo{
 		Form: "무위원", Freq: 17, POSScore: -1.7342134, Score: 0.69981515,
-	}, wordInfos[0])
+	}
+	assert.True(t, cmp.Equal(expected, wordInfos[0], floatOpts))
 	assert.Equal(t, 0, kb.Close())
 }
diff --git a/scripts/install_kiwi.bash b/scripts/install_kiwi.bash
index dbd7e05..0c41ab6 100644
--- a/scripts/install_kiwi.bash
+++ b/scripts/install_kiwi.bash
@@ -5,17 +5,24 @@ KIWI_VERSION="$1"
 
 if [ "$(uname)" == "Linux" ]; then
   OS='lnx'
+  ARCH='x86_64'
 elif [ "$(uname)" == "Darwin" ]; then
   OS='mac'
+  # For v0.10.3, only x86_64 build is available for macOS
+  # ARM64 Macs will use x86_64 build with Rosetta translation
+  ARCH='x86_64'
 elif [ "$(uname)" == "Windows" ]; then
   OS='win'
+  ARCH='x86_64'
 fi
 
 echo "set OS env to ${OS:?}"
+echo "set ARCH env to ${ARCH:?}"
 echo "installing Kiwi version ${KIWI_VERSION:?}"
 
-wget -O kiwi.tgz "https://github.com/bab2min/Kiwi/releases/download/${KIWI_VERSION}/kiwi_${OS}_x86_64_${KIWI_VERSION}.tgz" &&
+wget -O kiwi.tgz "https://github.com/bab2min/Kiwi/releases/download/${KIWI_VERSION}/kiwi_${OS}_${ARCH}_${KIWI_VERSION}.tgz" &&
   tar xzvf kiwi.tgz &&
+  sudo mkdir -p /usr/local/lib /usr/local/include &&
   sudo mv build/libkiwi* /usr/local/lib/ &&
   [[ "$(uname)" == "Linux" ]] && sudo ldconfig || echo 'skip' &&
   rm -rf kiwi.tgz build &&