diff --git a/ansi/build.gradle b/ansi/build.gradle
index e7a5a7b..5c50ca8 100644
--- a/ansi/build.gradle
+++ b/ansi/build.gradle
@@ -79,6 +79,7 @@ javadoc {
             setMemberLevel(JavadocMemberLevel.PUBLIC)  // Only display public stuff
             setOverview("src/main/javadoc/overview.html")  // We want a custom overview page to greet the visitor
             setLocale("en_US")  // 你好
+            addStringOption("Xwerror", "-quiet") // Fail build on warning
 
             setJFlags([
                     "-Duser.language=en_US"  // See above
diff --git a/base/build.gradle b/base/build.gradle
index b5e0a34..10e59f8 100644
--- a/base/build.gradle
+++ b/base/build.gradle
@@ -118,6 +118,7 @@ javadoc {
             setMemberLevel(JavadocMemberLevel.PUBLIC)  // Only display public stuff
             setOverview("src/main/javadoc/overview.html")  // We want a custom overview page to greet the visitor
             setLocale("en_US")  // 你好
+            addStringOption("Xwerror", "-quiet") // Fail build on warning
 
             setJFlags([
                     "-Duser.language=en_US"  // See above
diff --git a/build.gradle b/build.gradle
index b0cc542..b9d57c9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -56,6 +56,7 @@ tasks.register("javadocAll", Javadoc) {
         setMemberLevel(JavadocMemberLevel.PUBLIC)  // Only display public stuff
         setOverview("src/main/javadoc/overview.html")  // We want a custom overview page to greet the visitor
         setLocale("en_US")  // 你好
+        addStringOption("Xwerror", "-quiet") // Fail build on warning
 
         setJFlags([
                 "-Duser.language=en_US"  // See above
diff --git a/graphics/build.gradle b/graphics/build.gradle
index 9520270..696d81b 100644
--- a/graphics/build.gradle
+++ b/graphics/build.gradle
@@ -77,6 +77,7 @@ javadoc {
             setMemberLevel(JavadocMemberLevel.PUBLIC)  // Only display public stuff
             setOverview("src/main/javadoc/overview.html")  // We want a custom overview page to greet the visitor
             setLocale("en_US")  // 你好
+            addStringOption("Xwerror", "-quiet") // Fail build on warning
 
             setJFlags([
                     "-Duser.language=en_US"  // See above
diff --git a/graphics/glfw/build.gradle b/graphics/glfw/build.gradle
index ccf63a3..ec2f759 100644
--- a/graphics/glfw/build.gradle
+++ b/graphics/glfw/build.gradle
@@ -112,6 +112,7 @@ javadoc {
             setMemberLevel(JavadocMemberLevel.PUBLIC)  // Only display public stuff
             setOverview("src/main/javadoc/overview.html")  // We want a custom overview page to greet the visitor
             setLocale("en_US")  // 你好
+            addStringOption("Xwerror", "-quiet") // Fail build on warning
 
             setJFlags([
                     "-Duser.language=en_US"  // See above
diff --git a/graphics/opengl/build.gradle b/graphics/opengl/build.gradle
index 96e6c43..ccbb38f 100644
--- a/graphics/opengl/build.gradle
+++ b/graphics/opengl/build.gradle
@@ -116,6 +116,7 @@ javadoc {
             setMemberLevel(JavadocMemberLevel.PUBLIC)  // Only display public stuff
             setOverview("src/main/javadoc/overview.html")  // We want a custom overview page to greet the visitor
             setLocale("en_US")  // 你好
+            addStringOption("Xwerror", "-quiet") // Fail build on warning
 
             setJFlags([
                     "-Duser.language=en_US"  // See above
diff --git a/graphics/vulkan/build.gradle b/graphics/vulkan/build.gradle
index 01692bd..2babba1 100644
--- a/graphics/vulkan/build.gradle
+++ b/graphics/vulkan/build.gradle
@@ -113,6 +113,7 @@ javadoc {
             setMemberLevel(JavadocMemberLevel.PUBLIC)  // Only display public stuff
             setOverview("src/main/javadoc/overview.html")  // We want a custom overview page to greet the visitor
             setLocale("en_US")  // 你好
+            addStringOption("Xwerror", "-quiet") // Fail build on warning
 
             setJFlags([
                     "-Duser.language=en_US"  // See above
diff --git a/slf4j-compat/build.gradle b/slf4j-compat/build.gradle
index 517b901..941b27c 100644
--- a/slf4j-compat/build.gradle
+++ b/slf4j-compat/build.gradle
@@ -71,6 +71,7 @@ javadoc {
             setMemberLevel(JavadocMemberLevel.PUBLIC)  // Only display public stuff
             setOverview("src/main/javadoc/overview.html")  // We want a custom overview page to greet the visitor
             setLocale("en_US")  // 你好
+            addStringOption("Xwerror", "-quiet") // Fail build on warning
 
             setJFlags([
                     "-Duser.language=en_US"  // See above