diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 82d742c..5e2b5e3 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -43,6 +43,10 @@ val generateBuildInfo = tasks.register("generateBuildInfo") {
         commandLine("git", "-C", rootProject.projectDir.absolutePath,
             "rev-parse", "--short", "HEAD")
     }.standardOutput.asText.map { it.trim() }
+    // Register the commit as a task input: without this Gradle calls the
+    // task UP-TO-DATE after a new commit and the jar keeps the STALE baked
+    // commit (the in-app update check then never reports "up to date").
+    inputs.property("commit", commit)
     doLast {
         val dir = outDir.get().asFile
         dir.mkdirs()