diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1a3deeff..603ed907 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,16 @@
 Change Log
 ==========
 
+Version 0.21.0 *(2024-06-07)*
+-----------------------------
+
+* Implement `bit_and`  and `bit_or` Aggregation function.
+* Implement Array literal and Index expression.
+* Implement Index expression for Multi dimensions arrays.
+* Implement Index expression and fix exception handling.
+* Implement `array_length` Array function.
+* Fix runtime exception handling.
+
 Version 0.20.0 *(2024-05-31)*
 -----------------------------
 
diff --git a/Cargo.lock b/Cargo.lock
index cafe52d1..3583614d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -440,7 +440,7 @@ dependencies = [
 
 [[package]]
 name = "gitql"
-version = "0.20.0"
+version = "0.21.0"
 dependencies = [
  "atty",
  "gitql-ast",
@@ -454,14 +454,14 @@ dependencies = [
 
 [[package]]
 name = "gitql-ast"
-version = "0.18.0"
+version = "0.19.0"
 dependencies = [
  "gitql-core",
 ]
 
 [[package]]
 name = "gitql-cli"
-version = "0.20.0"
+version = "0.21.0"
 dependencies = [
  "comfy-table",
  "gitql-ast",
@@ -472,7 +472,7 @@ dependencies = [
 
 [[package]]
 name = "gitql-core"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
  "chrono",
  "csv",
@@ -481,7 +481,7 @@ dependencies = [
 
 [[package]]
 name = "gitql-engine"
-version = "0.20.0"
+version = "0.21.0"
 dependencies = [
  "chrono",
  "gitql-ast",
@@ -491,7 +491,7 @@ dependencies = [
 
 [[package]]
 name = "gitql-parser"
-version = "0.19.0"
+version = "0.20.0"
 dependencies = [
  "gitql-ast",
  "gitql-core",
@@ -499,7 +499,7 @@ dependencies = [
 
 [[package]]
 name = "gitql-std"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
  "chrono",
  "gitql-core",
diff --git a/Cargo.toml b/Cargo.toml
index 4bbbbd9f..ca8c517d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "gitql"
 authors = ["AmrDeveloper"]
-version = "0.20.0"
+version = "0.21.0"
 edition = "2021"
 description = "A SQL like query language to perform queries on .git files"
 license = "MIT"
@@ -26,11 +26,11 @@ members = [
 gix = { version = "0.63.0", default-features = false }
 
 [dependencies]
-gitql-core = { path = "./crates/gitql-core", version = "0.1.0" }
-gitql-std = { path = "./crates/gitql-std", version = "0.1.0" }
-gitql-ast = { path = "./crates/gitql-ast", version = "0.18.0" }
-gitql-parser = { path = "./crates/gitql-parser", version = "0.19.0" }
-gitql-engine = { path = "./crates/gitql-engine", version = "0.20.0" }
-gitql-cli = { path = "./crates/gitql-cli", version = "0.20.0" }
+gitql-core = { path = "./crates/gitql-core", version = "0.2.0" }
+gitql-std = { path = "./crates/gitql-std", version = "0.2.0" }
+gitql-ast = { path = "./crates/gitql-ast", version = "0.19.0" }
+gitql-parser = { path = "./crates/gitql-parser", version = "0.20.0" }
+gitql-engine = { path = "./crates/gitql-engine", version = "0.21.0" }
+gitql-cli = { path = "./crates/gitql-cli", version = "0.21.0" }
 gix = { workspace = true, features = ["blob-diff", "max-performance"] }
 atty = "0.2.14"
diff --git a/crates/gitql-ast/Cargo.toml b/crates/gitql-ast/Cargo.toml
index 0a47439d..bfb38639 100644
--- a/crates/gitql-ast/Cargo.toml
+++ b/crates/gitql-ast/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "gitql-ast"
 authors = ["AmrDeveloper"]
-version = "0.18.0"
+version = "0.19.0"
 edition = "2021"
 description = "GitQL Abstract syntax tree (AST)"
 repository = "https://github.com/amrdeveloper/gql/tree/main/crates/gitql-ast"
@@ -10,4 +10,4 @@ keywords = ["cli", "gql", "language", "git", "sql"]
 categories = ["command-line-utilities"]
 
 [dependencies]
-gitql-core = { path = "../gitql-core", version = "0.1.0" }
+gitql-core = { path = "../gitql-core", version = "0.2.0" }
diff --git a/crates/gitql-cli/Cargo.toml b/crates/gitql-cli/Cargo.toml
index ffe1b81b..320e7653 100644
--- a/crates/gitql-cli/Cargo.toml
+++ b/crates/gitql-cli/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "gitql-cli"
 authors = ["AmrDeveloper"]
-version = "0.20.0"
+version = "0.21.0"
 edition = "2021"
 description = "GitQL Command line interface (CLI) components"
 repository = "https://github.com/amrdeveloper/gql/tree/main/crates/gitql-cli"
@@ -10,8 +10,8 @@ keywords = ["cli", "gql", "language", "git", "sql"]
 categories = ["command-line-utilities"]
 
 [dependencies]
-gitql-core = { path = "../gitql-core", version = "0.1.0" }
-gitql-ast = { path = "../gitql-ast", version = "0.18.0" }
-gitql-parser = { path = "../gitql-parser", version = "0.19.0" }
+gitql-core = { path = "../gitql-core", version = "0.2.0" }
+gitql-ast = { path = "../gitql-ast", version = "0.19.0" }
+gitql-parser = { path = "../gitql-parser", version = "0.20.0" }
 comfy-table = "7.1.0"
 termcolor = "1.4.1"
diff --git a/crates/gitql-core/Cargo.toml b/crates/gitql-core/Cargo.toml
index 5613d4fb..bca45671 100644
--- a/crates/gitql-core/Cargo.toml
+++ b/crates/gitql-core/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "gitql-core"
 authors = ["AmrDeveloper"]
-version = "0.1.0"
+version = "0.2.0"
 edition = "2021"
 description = "GitQL Core components"
 repository = "https://github.com/amrdeveloper/gql/tree/main/crates/gitql-cli"
diff --git a/crates/gitql-engine/Cargo.toml b/crates/gitql-engine/Cargo.toml
index 8bcb358e..0cc0f834 100644
--- a/crates/gitql-engine/Cargo.toml
+++ b/crates/gitql-engine/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "gitql-engine"
 authors = ["AmrDeveloper"]
-version = "0.20.0"
+version = "0.21.0"
 edition = "2021"
 description = "GitQL Engine"
 repository = "https://github.com/amrdeveloper/gql/tree/main/crates/gitql-engine"
@@ -10,7 +10,7 @@ keywords = ["cli", "gql", "language", "git", "sql"]
 categories = ["command-line-utilities"]
 
 [dependencies]
-gitql-core = { path = "../gitql-core", version = "0.1.0" }
-gitql-ast = { path = "../gitql-ast", version = "0.18.0" }
+gitql-core = { path = "../gitql-core", version = "0.2.0" }
+gitql-ast = { path = "../gitql-ast", version = "0.19.0" }
 regex = "1.10.4"
 chrono = "0.4.38"
diff --git a/crates/gitql-parser/Cargo.toml b/crates/gitql-parser/Cargo.toml
index b02f04d4..3141826d 100644
--- a/crates/gitql-parser/Cargo.toml
+++ b/crates/gitql-parser/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "gitql-parser"
 authors = ["AmrDeveloper"]
-version = "0.19.0"
+version = "0.20.0"
 edition = "2021"
 description = "GitQL parser"
 repository = "https://github.com/amrdeveloper/gql/tree/main/crates/gitql-parser"
@@ -10,5 +10,5 @@ keywords = ["cli", "gql", "language", "git", "sql"]
 categories = ["command-line-utilities"]
 
 [dependencies]
-gitql-core = { path = "../gitql-core", version = "0.1.0" }
-gitql-ast = { path = "../gitql-ast", version = "0.18.0" }
+gitql-core = { path = "../gitql-core", version = "0.2.0" }
+gitql-ast = { path = "../gitql-ast", version = "0.19.0" }
diff --git a/crates/gitql-std/Cargo.toml b/crates/gitql-std/Cargo.toml
index bd398842..5057f426 100644
--- a/crates/gitql-std/Cargo.toml
+++ b/crates/gitql-std/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "gitql-std"
 authors = ["AmrDeveloper"]
-version = "0.1.0"
+version = "0.2.0"
 edition = "2021"
 description = "GitQL Standard and Aggregation functions"
 repository = "https://github.com/amrdeveloper/gql/tree/main/crates/gitql-cli"
@@ -10,7 +10,7 @@ keywords = ["cli", "gql", "language", "git", "sql"]
 categories = ["command-line-utilities"]
 
 [dependencies]
-gitql-core = { path = "../gitql-core", version = "0.1.0" }
+gitql-core = { path = "../gitql-core", version = "0.2.0" }
 chrono = "0.4.38"
 regex = "1.10.4"
 rand = "0.8.5"