diff --git a/Cargo.lock b/Cargo.lock
index b02a4d57..b5e0906e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = 3
 
 [[package]]
 name = "erg"
-version = "0.5.8"
+version = "0.5.9-nightly.0"
 dependencies = [
  "erg_common",
  "erg_compiler",
@@ -14,7 +14,7 @@ dependencies = [
 
 [[package]]
 name = "erg_common"
-version = "0.5.8"
+version = "0.5.9-nightly.0"
 dependencies = [
  "hermit-abi",
  "libc",
@@ -23,7 +23,7 @@ dependencies = [
 
 [[package]]
 name = "erg_compiler"
-version = "0.5.8"
+version = "0.5.9-nightly.0"
 dependencies = [
  "erg_common",
  "erg_parser",
@@ -32,14 +32,14 @@ dependencies = [
 
 [[package]]
 name = "erg_parser"
-version = "0.5.8"
+version = "0.5.9-nightly.0"
 dependencies = [
  "erg_common",
 ]
 
 [[package]]
 name = "erg_type"
-version = "0.5.8"
+version = "0.5.9-nightly.0"
 dependencies = [
  "erg_common",
  "erg_parser",
diff --git a/Cargo.toml b/Cargo.toml
index 14376a3d..c397bbf2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "erg"
-version = "0.5.8"
+version = "0.5.9-nightly.0"
 description = "The Erg programming language"
 authors = ["erg-lang team <moderation.erglang@gmail.com>"]
 license = "MIT OR Apache-2.0"
@@ -19,7 +19,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.5.8"
+version = "0.5.9-nightly.0"
 authors = ["erg-lang team <moderation.erglang@gmail.com>"]
 license = "MIT OR Apache-2.0"
 edition = "2021"
@@ -56,10 +56,10 @@ traditional_chinese = [
 pre-commit = []
 
 [dependencies]
-erg_common = { version = "0.5.8", path = "./compiler/erg_common" }
-erg_parser = { version = "0.5.8", path = "./compiler/erg_parser" }
-erg_compiler = { version = "0.5.8", path = "./compiler/erg_compiler" }
-erg_type = { version = "0.5.8", path = "./compiler/erg_type" }
+erg_common = { version = "0.5.9-nightly.0", path = "./compiler/erg_common" }
+erg_parser = { version = "0.5.9-nightly.0", path = "./compiler/erg_parser" }
+erg_compiler = { version = "0.5.9-nightly.0", path = "./compiler/erg_compiler" }
+erg_type = { version = "0.5.9-nightly.0", path = "./compiler/erg_type" }
 
 # [workspace]
 # member = ["cm", "dyne"]
diff --git a/compiler/erg_compiler/Cargo.toml b/compiler/erg_compiler/Cargo.toml
index e2f5a6c3..128e9f4a 100644
--- a/compiler/erg_compiler/Cargo.toml
+++ b/compiler/erg_compiler/Cargo.toml
@@ -26,9 +26,9 @@ traditional_chinese = [
 ]
 
 [dependencies]
-erg_common = { version = "0.5.8", path = "../erg_common" }
-erg_parser = { version = "0.5.8", path = "../erg_parser" }
-erg_type = { version = "0.5.8", path = "../erg_type" }
+erg_common = { version = "0.5.9-nightly.0", path = "../erg_common" }
+erg_parser = { version = "0.5.9-nightly.0", path = "../erg_parser" }
+erg_type = { version = "0.5.9-nightly.0", path = "../erg_type" }
 
 [lib]
 path = "lib.rs"
diff --git a/compiler/erg_parser/Cargo.toml b/compiler/erg_parser/Cargo.toml
index 38288345..c9f4c13a 100644
--- a/compiler/erg_parser/Cargo.toml
+++ b/compiler/erg_parser/Cargo.toml
@@ -16,7 +16,7 @@ simplified_chinese = ["erg_common/simplified_chinese"]
 traditional_chinese = ["erg_common/traditional_chinese"]
 
 [dependencies]
-erg_common = { version = "0.5.8", path = "../erg_common" }
+erg_common = { version = "0.5.9-nightly.0", path = "../erg_common" }
 
 [lib]
 path = "lib.rs"
diff --git a/compiler/erg_type/Cargo.toml b/compiler/erg_type/Cargo.toml
index 3727d03c..06f89c5b 100644
--- a/compiler/erg_type/Cargo.toml
+++ b/compiler/erg_type/Cargo.toml
@@ -18,8 +18,8 @@ simplified_chinese = ["erg_common/simplified_chinese"]
 traditional_chinese = ["erg_common/traditional_chinese"]
 
 [dependencies]
-erg_common = { version = "0.5.8", path = "../erg_common" }
-erg_parser = { version = "0.5.8", path = "../erg_parser" }
+erg_common = { version = "0.5.9-nightly.0", path = "../erg_common" }
+erg_parser = { version = "0.5.9-nightly.0", path = "../erg_parser" }
 
 [lib]
 path = "lib.rs"