diff --git a/sec1/Cargo.lock b/sec1/Cargo.lock
index baebccbc5..e793492f2 100644
--- a/sec1/Cargo.lock
+++ b/sec1/Cargo.lock
@@ -88,9 +88,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.169"
+version = "0.2.170"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5aba8db14291edd000dfcc4d620c7ebfb122c613afb886ca8803fa4e128a20a"
+checksum = "875b3680cb2f8f71bdcf9a30f38d48282f5d3c95cbf9b3fa57269bb5d5c06828"
 
 [[package]]
 name = "linux-raw-sys"
@@ -156,7 +156,7 @@ dependencies = [
 
 [[package]]
 name = "sec1"
-version = "0.8.0-rc.3"
+version = "0.8.0-rc.4"
 dependencies = [
  "base16ct",
  "der",
diff --git a/sec1/Cargo.toml b/sec1/Cargo.toml
index 18715bd7d..cd633438b 100644
--- a/sec1/Cargo.toml
+++ b/sec1/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sec1"
-version = "0.8.0-rc.3"
+version = "0.8.0-rc.4"
 description = """
 Pure Rust implementation of SEC1: Elliptic Curve Cryptography encoding formats
 including ASN.1 DER-serialized private keys as well as the