diff --git a/build.mill b/build.mill
index dfae48f3..316b4209 100644
--- a/build.mill
+++ b/build.mill
@@ -153,7 +153,7 @@ trait SparkModule extends Cross.Module2[String, String] with SbtModule with Sona
       mvn"org.apache.xmlbeans:xmlbeans:5.4.0",
       mvn"com.norbitltd::spoiwo:2.2.1",
       mvn"com.github.pjfanning:excel-streaming-reader:5.3.0",
-      mvn"org.apache.logging.log4j:log4j-api:2.24.3",
+      mvn"org.apache.logging.log4j:log4j-api:2.26.1",
       mvn"com.zaxxer:SparseBitSet:1.3",
       mvn"org.apache.commons:commons-collections4:4.6.0",
       mvn"com.github.virtuald:curvesapi:1.08",
@@ -163,7 +163,7 @@ trait SparkModule extends Cross.Module2[String, String] with SbtModule with Sona
       mvn"com.eed3si9n.ifdef::ifdef-annotation:0.4.1"
     ) ++ alwaysBundledDeps
     if (sparkVersion >= "3.3.0") {
-      base ++ Seq(mvn"org.apache.logging.log4j:log4j-core:2.24.3")
+      base ++ Seq(mvn"org.apache.logging.log4j:log4j-core:2.26.1")
     } else {
       base
     }