diff --git a/Cargo.lock b/Cargo.lock
index e1b6c94c..5836075c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1282,7 +1282,7 @@ dependencies = [
  "http-range",
  "httpdate",
  "hyper",
- "idna 0.3.0",
+ "idna",
  "md-5",
  "multer",
  "nom",
@@ -1820,16 +1820,6 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 
-[[package]]
-name = "idna"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e14ddfc70884202db2244c223200c204c2bda1bc6e0998d11b5e024d657209e6"
-dependencies = [
- "unicode-bidi",
- "unicode-normalization",
-]
-
 [[package]]
 name = "idna"
 version = "0.4.0"
@@ -4082,7 +4072,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "50bff7831e19200a85b17131d085c25d7811bc4e186efdaf54bbd132994a88cb"
 dependencies = [
  "form_urlencoded",
- "idna 0.4.0",
+ "idna",
  "percent-encoding",
 ]
 
diff --git a/src/api/Cargo.toml b/src/api/Cargo.toml
index 3d6b527e..c2155eb9 100644
--- a/src/api/Cargo.toml
+++ b/src/api/Cargo.toml
@@ -28,7 +28,7 @@ crypto-common = "0.1"
 err-derive = "0.3"
 hex = "0.4"
 hmac = "0.12"
-idna = "0.3"
+idna = "0.4"
 tracing = "0.1"
 md-5 = "0.10"
 nom = "7.1"