diff --git a/selenium-webdriver-junit4/build.gradle b/selenium-webdriver-junit4/build.gradle
index 6d3e79a2..0de6cc77 100644
--- a/selenium-webdriver-junit4/build.gradle
+++ b/selenium-webdriver-junit4/build.gradle
@@ -75,7 +75,7 @@ repositories {
 
 ext {
     slf4jVersion  = "2.0.17"
-    logbackVersion  = "1.5.20"
+    logbackVersion  = "1.5.21"
 
     seleniumVersion  = "4.38.0"
     junit4Version = "4.13.2"
diff --git a/selenium-webdriver-junit5-seljup/build.gradle b/selenium-webdriver-junit5-seljup/build.gradle
index 8589f977..efea6b21 100644
--- a/selenium-webdriver-junit5-seljup/build.gradle
+++ b/selenium-webdriver-junit5-seljup/build.gradle
@@ -75,7 +75,7 @@ repositories {
 
 ext {
     slf4jVersion  = "2.0.17"
-    logbackVersion  = "1.5.20"
+    logbackVersion  = "1.5.21"
 
     seleniumVersion  = "4.38.0"
     junit5Version = "6.0.1"
diff --git a/selenium-webdriver-junit5/build.gradle b/selenium-webdriver-junit5/build.gradle
index efb8ae00..b41f7b00 100644
--- a/selenium-webdriver-junit5/build.gradle
+++ b/selenium-webdriver-junit5/build.gradle
@@ -76,7 +76,7 @@ repositories {
 
 ext {
     slf4jVersion  = "2.0.17"
-    logbackVersion  = "1.5.20"
+    logbackVersion  = "1.5.21"
 
     seleniumVersion  = "4.38.0"
     junit5Version = "6.0.1"
diff --git a/selenium-webdriver-testng/build.gradle b/selenium-webdriver-testng/build.gradle
index aa69b79e..984cb52e 100644
--- a/selenium-webdriver-testng/build.gradle
+++ b/selenium-webdriver-testng/build.gradle
@@ -81,7 +81,7 @@ repositories {
 
 ext {
     slf4jVersion  = "2.0.17"
-    logbackVersion  = "1.5.20"
+    logbackVersion  = "1.5.21"
 
     seleniumVersion  = "4.38.0"
     testNgVersion = "7.11.0"