diff --git a/Cargo.lock b/Cargo.lock
index ca842858be90ae358707691727ee429c93e4befa..a21302ce87fc9fe219709cb8c931e5515bd4a8ec 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2763,9 +2763,9 @@ dependencies = [
 
 [[package]]
 name = "semver"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f3aac57ee7f3272d8395c6e4f502f434f0e289fcd62876f70daa008c20dcabe"
+checksum = "568a8e6258aa33c13358f81fd834adb854c6f7c9468520910a9b1e8fac068012"
 dependencies = [
  "serde",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 758ba5a654733fd6f6a6a8960a53eaa7aca09fdc..06a09af494aa284af927d3bf973fa9b62b7c0da1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -34,7 +34,7 @@ toml = "0.5.8"
 rustc_version = "0.4.0"
 blake2 = "0.9.1"
 contract-metadata = { version = "0.3.0", path = "./metadata" }
-semver = { version = "1.0.3", features = ["serde"] }
+semver = { version = "1.0.4", features = ["serde"] }
 serde = { version = "1.0.126", default-features = false, features = ["derive"] }
 serde_json = "1.0.66"
 tempfile = "3.2.0"
diff --git a/metadata/Cargo.toml b/metadata/Cargo.toml
index e90309a07edf07117eabd38084c834c85330622d..f4fedacae5ea35b1ab4745c5e8643e6585e77231 100644
--- a/metadata/Cargo.toml
+++ b/metadata/Cargo.toml
@@ -17,7 +17,7 @@ include = ["Cargo.toml", "*.rs", "LICENSE"]
 path = "lib.rs"
 
 [dependencies]
-semver = { version = "1.0.3", features = ["serde"] }
+semver = { version = "1.0.4", features = ["serde"] }
 serde = { version = "1.0.126", default-features = false, features = ["derive"] }
 serde_json = "1.0.66"
 url = { version = "2.2.2", features = ["serde"] }