diff --git a/Cargo.lock b/Cargo.lock
index e90d9606..4df12b51 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -227,7 +227,7 @@ dependencies = [
  "elliptic-curve 0.13.0-rc.0",
  "hex-literal",
  "rfc6979",
- "serdect 0.1.0",
+ "serdect",
  "sha2 0.10.6",
  "signature 2.0.0",
 ]
@@ -316,7 +316,7 @@ dependencies = [
  "pkcs8 0.10.0",
  "rand_core 0.6.4",
  "sec1 0.7.1",
- "serdect 0.2.0",
+ "serdect",
  "subtle",
  "zeroize",
 ]
@@ -740,7 +740,7 @@ dependencies = [
  "der 0.7.0",
  "generic-array",
  "pkcs8 0.10.0",
- "serdect 0.2.0",
+ "serdect",
  "subtle",
  "zeroize",
 ]
@@ -760,16 +760,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "serdect"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "038fce1bf4d74b9b30ea7dcd59df75ba8ec669a5dcb3cc64fbfcef7334ced32c"
-dependencies = [
- "base16ct 0.1.1",
- "serde",
-]
-
 [[package]]
 name = "serdect"
 version = "0.2.0"
diff --git a/ecdsa/Cargo.toml b/ecdsa/Cargo.toml
index 19fb850d..17748c0c 100644
--- a/ecdsa/Cargo.toml
+++ b/ecdsa/Cargo.toml
@@ -22,7 +22,7 @@ signature = { version = "2.0, <2.1", default-features = false, features = ["rand
 # optional dependencies
 der = { version = "0.7", optional = true }
 rfc6979 = { version = "0.4", optional = true, path = "../rfc6979" }
-serdect = { version = "0.1", optional = true, default-features = false, features = ["alloc"] }
+serdect = { version = "0.2", optional = true, default-features = false, features = ["alloc"] }
 
 [dev-dependencies]
 elliptic-curve = { version = "=0.13.0-rc.0", default-features = false, features = ["dev"] }