diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 508a915c..15b1a32c 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -18,7 +18,7 @@ jme3-plugins = { module = "org.jmonkeyengine:jme3-plugins", version.ref = "jme"
 jme3-testdata-old = "org.jmonkeyengine:jme3-testdata:3.1.0-stable"
 jme3-utilities-nifty = "com.github.stephengold:jme3-utilities-nifty:0.9.37"
 jme3-xbuf-loader = "com.github.xbuf.jme3_xbuf:jme3_xbuf_loader:0.9.1"
-logback-classic = "ch.qos.logback:logback-classic:1.5.12"
+logback-classic = "ch.qos.logback:logback-classic:1.5.15"
 minie = "com.github.stephengold:Minie:8.2.0"
 nashorn-core = "org.openjdk.nashorn:nashorn-core:15.4"
 nifty-style-black = "com.github.nifty-gui:nifty-style-black:1.4.3"