diff --git a/build.sbt b/build.sbt
index 4df6234..19d7558 100644
--- a/build.sbt
+++ b/build.sbt
@@ -70,7 +70,7 @@
   "org.testcontainers"              % "postgresql"                   % "1.15.1" % "test",
   "net.i2p.crypto"                  % "eddsa"                        % "0.3.0",
   "is.tagomor.woothee"              % "woothee-java"                 % "1.11.0",
-  "org.ec4j.core"                   % "ec4j-core"                    % "0.0.4",
+  "org.ec4j.core"                   % "ec4j-core"                    % "0.3.0",
   "org.kohsuke"                     % "github-api"                   % "1.122" % "test"
 )