diff --git a/Cargo.lock b/Cargo.lock
index 14f4f51..0aaa41b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -126,9 +126,9 @@ dependencies = [
 
 [[package]]
 name = "const-oid"
-version = "0.10.0-rc.0"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9adcf94f05e094fca3005698822ec791cb4433ced416afda1c5ca3b8dfc05a2f"
+checksum = "0dabb6555f92fb9ee4140454eb5dcd14c7960e1225c6d1a6cc361f032947713e"
 
 [[package]]
 name = "cpufeatures"
@@ -161,9 +161,9 @@ dependencies = [
 
 [[package]]
 name = "der"
-version = "0.8.0-rc.0"
+version = "0.8.0-rc.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05d9c07d3bd80cf0935ce478d07edf7e7a5b158446757f988f3e62082227b700"
+checksum = "b00a9651bf9c00a38b7c383073cb22fb42f20a5f978c9f97ad5c7128cbd3c1bd"
 dependencies = [
  "const-oid",
  "pem-rfc7468",
@@ -361,9 +361,9 @@ dependencies = [
 
 [[package]]
 name = "pem-rfc7468"
-version = "1.0.0-rc.0"
+version = "1.0.0-rc.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2b24c1c4a3b352d47de5ec824193e68317dc0ce041f6279a4771eb550ab7f8c"
+checksum = "a8e58fab693c712c0d4e88f8eb3087b6521d060bcaf76aeb20cb192d809115ba"
 dependencies = [
  "base64ct",
 ]
@@ -684,9 +684,9 @@ checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
 [[package]]
 name = "spki"
-version = "0.8.0-rc.0"
+version = "0.8.0-rc.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee3fb1c675852398475928637b3ebbdd7e1d0cc24d27b3bbc81788b4eb51e310"
+checksum = "c2f0e2bdca9b00f5be6dd3bb6647d50fd0f24a508a95f78e3bb2fe98d0403c85"
 dependencies = [
  "base64ct",
  "der",
diff --git a/Cargo.toml b/Cargo.toml
index dd466e2..53b9f23 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ digest = { version = "=0.11.0-pre.9", default-features = false, features = ["all
 pkcs1 = { version = "0.8.0-rc.0", default-features = false, features = ["alloc", "pkcs8"] }
 pkcs8 = { version = "0.11.0-rc.0", default-features = false, features = ["alloc"] }
 signature = { version = "=2.3.0-pre.4", default-features = false, features = ["alloc", "digest", "rand_core"] }
-spki = { version = "0.8.0-rc.0", default-features = false, features = ["alloc"] }
+spki = { version = "0.8.0-rc.2", default-features = false, features = ["alloc"] }
 zeroize = { version = "1.5", features = ["alloc"] }
 
 # optional dependencies