diff --git a/ansi/build.gradle b/ansi/build.gradle
index e7a5a7b3..5c50ca88 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 b5e0a34a..10e59f8f 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 b0cc542f..b9d57c90 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 95202703..696d81bc 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 ccf63a3c..ec2f759a 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 96e6c43e..ccbb38ff 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 01692bd7..2babba19 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 517b9010..941b27c1 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