diff --git a/3proxy-release-key-ed25519.asc b/3proxy-release-key-ed25519.asc
deleted file mode 100644
index 6cc88b5..0000000
--- a/3proxy-release-key-ed25519.asc
+++ /dev/null
@@ -1,10 +0,0 @@
------BEGIN PGP PUBLIC KEY BLOCK-----
-
-mDMEaogJthYJKwYBBAHaRw8BAQdA8rZ4l90kTOSrlosP0yyeX6jFGfiFFizawjS0
-vyQnmu60KjNwcm94eSByZWxlYXNlIHNpZ25pbmcgPDNwcm94eUAzcHJveHkub3Jn
-PoivBBMWCgBXFiEEvHxfo3tIuOfF5ScUw2JYsMbAg6oFAmqICbYbFIAAAAAABAAO
-bWFudTIsMi41KzEuMTIsMCwzAhsDBQsJCAcCAiICBhUKCQgLAgQWAgMBAh4HAheA
-AAoJEMNiWLDGwIOqBHIA/iRus5VEqL+v6nYQ+GDLDUZJzMfFcnDBI+BOOhiESnTp
-AP4s3uvhigRcdutxkYwSXBlJ+7wE1yZeuUmjPoJXvgNaDw==
-=Ngp2
------END PGP PUBLIC KEY BLOCK-----
diff --git a/SECURITY.md b/SECURITY.md
index 39c7191..66d7acb 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -33,12 +33,6 @@ Import it once:
 gpg --import 3proxy-release-key.asc
 ```
 
-Releases up to and including 0.9.9 were signed with an Ed25519 key, kept as
-`3proxy-release-key-ed25519.asc` for verifying those older files. Note that
-rpm 4.14 and earlier (RHEL/CentOS 8 and older) cannot import an Ed25519 key
-and will report `SIGNATURES NOT OK`; use the RSA key and 0.9.9.1 or later on
-those systems.
-
 Checksums and the checksum file signature:
 
 ```