diff --git a/Cargo.lock b/Cargo.lock
index 9c8fa8fd8bbea16b3ac0f4f66fa83ee8772417f8..38bf2900c5a6d323670517e9d8bc5e7cd8e40994 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -510,7 +510,7 @@ dependencies = [
  "pwasm-utils",
  "regex",
  "rustc_version",
- "semver 1.0.1",
+ "semver 1.0.3",
  "serde",
  "serde_json",
  "sp-core",
@@ -643,7 +643,7 @@ name = "contract-metadata"
 version = "0.2.0"
 dependencies = [
  "pretty_assertions",
- "semver 1.0.1",
+ "semver 1.0.3",
  "serde",
  "serde_json",
  "url",
@@ -2795,9 +2795,9 @@ dependencies = [
 
 [[package]]
 name = "semver"
-version = "1.0.1"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d023dabf011d5dcb5ac64e3685d97d3b0ef412911077a2851455c6098524a723"
+checksum = "5f3aac57ee7f3272d8395c6e4f502f434f0e289fcd62876f70daa008c20dcabe"
 dependencies = [
  "serde",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 55bd830c471804756e65a5b94c33b69f5f314c56..6c7405137e474d9022b2e0a37f63a13d2c91fbb7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -35,7 +35,7 @@ toml = "0.5.8"
 rustc_version = "0.3.3"
 blake2 = "0.9.1"
 contract-metadata = { version = "0.2.0", path = "./metadata" }
-semver = { version = "1.0.1", features = ["serde"] }
+semver = { version = "1.0.3", features = ["serde"] }
 serde = { version = "1.0.126", default-features = false, features = ["derive"] }
 serde_json = "1.0.64"
 tempfile = "3.2.0"
diff --git a/metadata/Cargo.toml b/metadata/Cargo.toml
index 04003f156efc409ba3c275c40df019ed09a30500..ab711dd84bb3855dd2044efc0d9f76a27a278e3e 100644
--- a/metadata/Cargo.toml
+++ b/metadata/Cargo.toml
@@ -17,7 +17,7 @@ include = ["Cargo.toml", "*.rs", "LICENSE"]
 path = "lib.rs"
 
 [dependencies]
-semver = { version = "1.0.1", features = ["serde"] }
+semver = { version = "1.0.3", features = ["serde"] }
 serde = { version = "1.0.126", default-features = false, features = ["derive"] }
 serde_json = "1.0.64"
 url = { version = "2.2.2", features = ["serde"] }