diff --git a/.gitignore b/.gitignore
index 088ba6b..6a0375b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,5 @@ Cargo.lock
 
 # These are backup files generated by rustfmt
 **/*.rs.bk
+
+.idea
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a4e2bd3..4d00f17 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,15 @@
-# Initial release (v0.2.0)
+# CHANGELOG
 
-{TODO: Description of what exactly we include in the initial release}
\ No newline at end of file
+## Pending
+
+### Breaking changes
+
+### Features
+
+### Improvements
+
+### Bug fixes
+
+## v0.3.0
+
+- initial release
\ No newline at end of file
diff --git a/Cargo.toml b/Cargo.toml
index 95dab48..b5f49f1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,14 @@
 [package]
 name = "ark-sponge"
-version = "0.2.0"
-authors = []
+version = "0.3.0"
+authors = [ "arkworks contributors" ]
+description = "An implementation of the cryptographic sponge functions for zkSNARK"
+homepage = "https://arkworks.rs"
+repository = "https://github.com/arkworks-rs/sponge"
+documentation = "https://docs.rs/ark-sponge/"
+keywords = [ "zero-knowledge", "cryptography", "zkSNARK", "SNARK", "Poseidon", "sponge" ]
+categories = [ "cryptography" ]
+include = ["Cargo.toml", "src", "README.md", "LICENSE-APACHE", "LICENSE-MIT"]
 edition = "2018"
 
 [profile.release]
@@ -11,23 +18,22 @@ incremental = true
 panic = 'abort'
 
 [dependencies]
-ark-ec = { version = "^0.2.0", default_features = false }
-ark-ff = { version = "^0.2.0", default_features = false }
-ark-serialize = { version = "0.2.0", default_features = false}
-ark-std = { version = "^0.2.0", default-features = false }
+ark-ec = { version = "^0.3.0", default_features = false }
+ark-ff = { version = "^0.3.0", default_features = false }
+ark-serialize = { version = "^0.3.0", default_features = false}
+ark-std = { version = "^0.3.0", default-features = false }
 derivative = { version = "2.1.1", features = [ "use_core" ] }
 digest = { version = "0.9.0", default_features = false }
-rand_core = { version = "0.5" }
-rand_chacha = { version = "0.2.1", default-features = false }
+rand_chacha = { version = "0.3.0", default-features = false }
 
 # Dependencies for r1cs
-ark-nonnative-field = { version = "^0.2.0", default-features = false, optional = true }
-ark-r1cs-std = { version = "^0.2.0", default-features = false, optional = true }
-ark-relations = { version = "^0.2.0", default-features = false, optional = true }
+ark-nonnative-field = { version = "^0.3.0", default-features = false, optional = true }
+ark-r1cs-std = { version = "^0.3.0", default-features = false, optional = true }
+ark-relations = { version = "^0.3.0", default-features = false, optional = true }
 tracing = { version = "0.1", default-features = false, features = [ "attributes" ], optional = true }
 
 [dev-dependencies]
-ark-test-curves = {version = "0.2.0", features = ["bls12_381_curve", "mnt4_753_curve"]}
+ark-test-curves = { version = "^0.3.0", features = ["bls12_381_curve", "mnt4_753_curve"]}
 
 [features]
 default = [ "r1cs", "std" ]