diff --git a/build.sbt b/build.sbt
index 9671557cc..8237f13da 100644
--- a/build.sbt
+++ b/build.sbt
@@ -54,7 +54,7 @@ libraryDependencies ++= Seq(
   "fr.brouillard.oss.security.xhub" % "xhub4j-core"              % "1.1.0",
   "io.github.java-diff-utils"       % "java-diff-utils"          % "4.16",
   "org.cache2k"                     % "cache2k-all"              % "1.6.0.Final",
-  "net.coobird"                     % "thumbnailator"            % "0.4.20",
+  "net.coobird"                     % "thumbnailator"            % "0.4.21",
   "com.github.zafarkhaja"           % "java-semver"              % "0.10.2",
   "com.nimbusds"                    % "oauth2-oidc-sdk"          % "11.29.2",
   "org.eclipse.jetty"               % "jetty-webapp"             % JettyVersion    % "provided",