diff --git a/cmd/resource/scheme.go b/cmd/resource/scheme.go
index 3e1d9cda..f1b0f53e 100644
--- a/cmd/resource/scheme.go
+++ b/cmd/resource/scheme.go
@@ -2,7 +2,7 @@ package resource
 
 import (
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 	"github.com/siyul-park/uniflow/pkg/primitive"
 	"github.com/siyul-park/uniflow/pkg/scheme"
 )
diff --git a/pkg/database/mongodb/encoding.go b/pkg/database/mongodb/encoding.go
index 1cb148c4..0d5e65c3 100644
--- a/pkg/database/mongodb/encoding.go
+++ b/pkg/database/mongodb/encoding.go
@@ -5,8 +5,8 @@ import (
 
 	"github.com/iancoleman/strcase"
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
 	"github.com/siyul-park/uniflow/pkg/database"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 	"github.com/siyul-park/uniflow/pkg/primitive"
 	"go.mongodb.org/mongo-driver/bson"
 	bsonprimitive "go.mongodb.org/mongo-driver/bson/primitive"
diff --git a/internal/encoding/decoder.go b/pkg/encoding/decoder.go
similarity index 100%
rename from internal/encoding/decoder.go
rename to pkg/encoding/decoder.go
diff --git a/internal/encoding/encoder.go b/pkg/encoding/encoder.go
similarity index 100%
rename from internal/encoding/encoder.go
rename to pkg/encoding/encoder.go
diff --git a/internal/encoding/error.go b/pkg/encoding/error.go
similarity index 100%
rename from internal/encoding/error.go
rename to pkg/encoding/error.go
diff --git a/internal/encoding/group.go b/pkg/encoding/group.go
similarity index 100%
rename from internal/encoding/group.go
rename to pkg/encoding/group.go
diff --git a/internal/encoding/group_test.go b/pkg/encoding/group_test.go
similarity index 100%
rename from internal/encoding/group_test.go
rename to pkg/encoding/group_test.go
diff --git a/pkg/plugin/networkx/mime.go b/pkg/plugin/networkx/mime.go
index fa708e07..45060808 100644
--- a/pkg/plugin/networkx/mime.go
+++ b/pkg/plugin/networkx/mime.go
@@ -13,7 +13,7 @@ import (
 	"net/url"
 
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 	"github.com/siyul-park/uniflow/pkg/primitive"
 )
 
diff --git a/pkg/primitive/binary.go b/pkg/primitive/binary.go
index 90fe04bf..59c49fbd 100644
--- a/pkg/primitive/binary.go
+++ b/pkg/primitive/binary.go
@@ -6,7 +6,7 @@ import (
 	"reflect"
 
 	"github.com/pkg/errors"
-	encoding2 "github.com/siyul-park/uniflow/internal/encoding"
+	encoding2 "github.com/siyul-park/uniflow/pkg/encoding"
 )
 
 type (
diff --git a/pkg/primitive/bool.go b/pkg/primitive/bool.go
index 95a964ec..4bfa38ac 100644
--- a/pkg/primitive/bool.go
+++ b/pkg/primitive/bool.go
@@ -4,7 +4,7 @@ import (
 	"reflect"
 
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 )
 
 type (
diff --git a/pkg/primitive/encoding.go b/pkg/primitive/encoding.go
index d612007a..71f2f54b 100644
--- a/pkg/primitive/encoding.go
+++ b/pkg/primitive/encoding.go
@@ -3,7 +3,7 @@ package primitive
 import (
 	"reflect"
 
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 )
 
 var (
diff --git a/pkg/primitive/float.go b/pkg/primitive/float.go
index fe73a995..5c3c3ebd 100644
--- a/pkg/primitive/float.go
+++ b/pkg/primitive/float.go
@@ -4,7 +4,7 @@ import (
 	"reflect"
 
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 )
 
 type (
diff --git a/pkg/primitive/int.go b/pkg/primitive/int.go
index c9f8b7b9..bf917c25 100644
--- a/pkg/primitive/int.go
+++ b/pkg/primitive/int.go
@@ -4,7 +4,7 @@ import (
 	"reflect"
 
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 )
 
 type (
diff --git a/pkg/primitive/map.go b/pkg/primitive/map.go
index 06d8767e..fdde0247 100644
--- a/pkg/primitive/map.go
+++ b/pkg/primitive/map.go
@@ -8,7 +8,7 @@ import (
 	"github.com/benbjohnson/immutable"
 	"github.com/iancoleman/strcase"
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 )
 
 type (
diff --git a/pkg/primitive/pointer.go b/pkg/primitive/pointer.go
index 5b3d0ae2..b7d10716 100644
--- a/pkg/primitive/pointer.go
+++ b/pkg/primitive/pointer.go
@@ -4,7 +4,7 @@ import (
 	"reflect"
 
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 )
 
 // NewPointerEncoder is encode *T to T.
diff --git a/pkg/primitive/shortcut.go b/pkg/primitive/shortcut.go
index 2af7e91b..3f4b172f 100644
--- a/pkg/primitive/shortcut.go
+++ b/pkg/primitive/shortcut.go
@@ -2,7 +2,7 @@ package primitive
 
 import (
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 )
 
 // NewPointerEncoder is encode Object to Object.
diff --git a/pkg/primitive/slice.go b/pkg/primitive/slice.go
index 5f9ca066..0fbfb386 100644
--- a/pkg/primitive/slice.go
+++ b/pkg/primitive/slice.go
@@ -6,7 +6,7 @@ import (
 
 	"github.com/benbjohnson/immutable"
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 )
 
 type (
diff --git a/pkg/primitive/string.go b/pkg/primitive/string.go
index 5153f7b8..4492954c 100644
--- a/pkg/primitive/string.go
+++ b/pkg/primitive/string.go
@@ -5,7 +5,7 @@ import (
 	"reflect"
 
 	"github.com/pkg/errors"
-	encoding2 "github.com/siyul-park/uniflow/internal/encoding"
+	encoding2 "github.com/siyul-park/uniflow/pkg/encoding"
 )
 
 type (
diff --git a/pkg/primitive/uint.go b/pkg/primitive/uint.go
index 7e30c0fb..fc98dbe2 100644
--- a/pkg/primitive/uint.go
+++ b/pkg/primitive/uint.go
@@ -4,7 +4,7 @@ import (
 	"reflect"
 
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 )
 
 type (
diff --git a/pkg/scheme/codec.go b/pkg/scheme/codec.go
index c3cce757..9f44ad9e 100644
--- a/pkg/scheme/codec.go
+++ b/pkg/scheme/codec.go
@@ -2,7 +2,7 @@ package scheme
 
 import (
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 	"github.com/siyul-park/uniflow/pkg/node"
 )
 
diff --git a/pkg/scheme/scheme.go b/pkg/scheme/scheme.go
index 70caa97c..9d0e045d 100644
--- a/pkg/scheme/scheme.go
+++ b/pkg/scheme/scheme.go
@@ -5,7 +5,7 @@ import (
 	"sync"
 
 	"github.com/pkg/errors"
-	"github.com/siyul-park/uniflow/internal/encoding"
+	"github.com/siyul-park/uniflow/pkg/encoding"
 	"github.com/siyul-park/uniflow/pkg/node"
 )