diff --git a/Gemfile.lock b/Gemfile.lock
index b85c77fa..f6328178 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ PATH
       bcrypt_pbkdf (~> 1.0)
       concurrent-ruby (~> 1.2)
       dotenv (~> 3.1)
-      ed25519 (~> 1.2)
+      ed25519 (~> 1.4)
       net-ssh (~> 7.3)
       sshkit (>= 1.23.0, < 2.0)
       thor (~> 1.3)
@@ -60,7 +60,7 @@ GEM
       reline (>= 0.3.8)
     dotenv (3.1.5)
     drb (2.2.1)
-    ed25519 (1.3.0)
+    ed25519 (1.4.0)
     erubi (1.13.0)
     i18n (1.14.6)
       concurrent-ruby (~> 1.0)
diff --git a/kamal.gemspec b/kamal.gemspec
index 7218f865..2d66d09a 100644
--- a/kamal.gemspec
+++ b/kamal.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "thor", "~> 1.3"
   spec.add_dependency "dotenv", "~> 3.1"
   spec.add_dependency "zeitwerk", ">= 2.6.18", "< 3.0"
-  spec.add_dependency "ed25519", "~> 1.2"
+  spec.add_dependency "ed25519", "~> 1.4"
   spec.add_dependency "bcrypt_pbkdf", "~> 1.0"
   spec.add_dependency "concurrent-ruby", "~> 1.2"
   spec.add_dependency "base64", "~> 0.2"