diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 1d263459d11..3df366c287f 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -10,7 +10,7 @@ org-aspectj = "1.9.22.1"
 org-bouncycastle = "1.78.1"
 org-eclipse-jetty = "11.0.24"
 org-jetbrains-kotlin = "1.9.25"
-org-jetbrains-kotlinx = "1.8.1"
+org-jetbrains-kotlinx = "1.9.0"
 org-mockito = "5.13.0"
 org-opensaml = "4.3.2"
 org-opensaml5 = "5.1.2"