diff --git a/example/kotlinlib/basic/5-programmable/build.mill b/example/kotlinlib/basic/5-programmable/build.mill
index 39ce8d088edc..a0bc18db76e1 100644
--- a/example/kotlinlib/basic/5-programmable/build.mill
+++ b/example/kotlinlib/basic/5-programmable/build.mill
@@ -8,7 +8,7 @@ object foo extends KotlinModule {
 
   def mvnDeps = Seq(
     mvn"com.github.ajalt.clikt:clikt:4.4.0",
-    mvn"org.jetbrains.kotlinx:kotlinx-html:0.11.0"
+    mvn"org.jetbrains.kotlinx:kotlinx-html:0.12.0"
   )
 
   object test extends KotlinTests, TestModule.Junit5 {
diff --git a/example/kotlinlib/basic/7-multi-module/build.mill b/example/kotlinlib/basic/7-multi-module/build.mill
index 88e898f2be2e..ebaf3e44df66 100644
--- a/example/kotlinlib/basic/7-multi-module/build.mill
+++ b/example/kotlinlib/basic/7-multi-module/build.mill
@@ -20,7 +20,7 @@ object foo extends MyModule {
 object bar extends MyModule {
   def mainClass = Some("bar.BarKt")
   def mvnDeps = Seq(
-    mvn"org.jetbrains.kotlinx:kotlinx-html:0.11.0"
+    mvn"org.jetbrains.kotlinx:kotlinx-html:0.12.0"
   )
 }
 
diff --git a/example/kotlinlib/basic/9-realistic/build.mill b/example/kotlinlib/basic/9-realistic/build.mill
index d638ef966ebd..574d9540b800 100644
--- a/example/kotlinlib/basic/9-realistic/build.mill
+++ b/example/kotlinlib/basic/9-realistic/build.mill
@@ -16,7 +16,7 @@ trait MyModule extends KotlinModule, PublishModule {
 
   def kotlinVersion = "2.2.20"
 
-  def mvnDeps = Seq(mvn"org.jetbrains.kotlinx:kotlinx-html:0.11.0")
+  def mvnDeps = Seq(mvn"org.jetbrains.kotlinx:kotlinx-html:0.12.0")
 
   object test extends KotlinTests, TestModule.Junit5 {
     def mvnDeps = Seq(
diff --git a/example/kotlinlib/dependencies/5-repository-config/build.mill b/example/kotlinlib/dependencies/5-repository-config/build.mill
index 8b086dd93ff4..f5ccdd6698e6 100644
--- a/example/kotlinlib/dependencies/5-repository-config/build.mill
+++ b/example/kotlinlib/dependencies/5-repository-config/build.mill
@@ -10,7 +10,7 @@ object foo extends KotlinModule {
 
   def mvnDeps = Seq(
     mvn"com.github.ajalt.clikt:clikt:4.4.0",
-    mvn"org.jetbrains.kotlinx:kotlinx-html:0.11.0"
+    mvn"org.jetbrains.kotlinx:kotlinx-html:0.12.0"
   )
 
   def repositories = Seq("https://oss.sonatype.org/content/repositories/releases")
diff --git a/example/kotlinlib/module/18-programmable-module-deps/build.mill b/example/kotlinlib/module/18-programmable-module-deps/build.mill
index ff3f5b29c632..a696a0d2326e 100644
--- a/example/kotlinlib/module/18-programmable-module-deps/build.mill
+++ b/example/kotlinlib/module/18-programmable-module-deps/build.mill
@@ -5,7 +5,7 @@ import mill.*, kotlinlib.*
 object bar extends KotlinModule {
   def kotlinVersion = "2.2.20"
   def mvnDeps = Seq(
-    mvn"org.jetbrains.kotlinx:kotlinx-html:0.11.0"
+    mvn"org.jetbrains.kotlinx:kotlinx-html:0.12.0"
   )
 }
 
diff --git a/example/kotlinlib/module/4-programmable-config/build.mill b/example/kotlinlib/module/4-programmable-config/build.mill
index aac98277acfb..097a5f2b2a15 100644
--- a/example/kotlinlib/module/4-programmable-config/build.mill
+++ b/example/kotlinlib/module/4-programmable-config/build.mill
@@ -5,7 +5,7 @@ import mill.*, kotlinlib.*
 object `package` extends KotlinModule {
   // You can have arbitrary numbers of third-party dependencies
   def mvnDeps = Seq(
-    mvn"org.jetbrains.kotlinx:kotlinx-html:0.11.0"
+    mvn"org.jetbrains.kotlinx:kotlinx-html:0.12.0"
   )
 
   def kotlinVersion = "2.2.20"
diff --git a/example/kotlinlib/script/9-programmable-module-deps/build.mill b/example/kotlinlib/script/9-programmable-module-deps/build.mill
index a2ba83defaa6..b3db0200e4f9 100644
--- a/example/kotlinlib/script/9-programmable-module-deps/build.mill
+++ b/example/kotlinlib/script/9-programmable-module-deps/build.mill
@@ -5,7 +5,7 @@ import mill.*, kotlinlib.*
 object bar extends KotlinModule {
   def kotlinVersion = "2.2.20"
   def mvnDeps = Seq(
-    mvn"org.jetbrains.kotlinx:kotlinx-html:0.11.0"
+    mvn"org.jetbrains.kotlinx:kotlinx-html:0.12.0"
   )
 }
 
diff --git a/example/kotlinlib/web/4-hello-kotlinjs/build.mill b/example/kotlinlib/web/4-hello-kotlinjs/build.mill
index da5fbe919aad..d1a3fef4182b 100644
--- a/example/kotlinlib/web/4-hello-kotlinjs/build.mill
+++ b/example/kotlinlib/web/4-hello-kotlinjs/build.mill
@@ -15,7 +15,7 @@ object `package` extends KotlinJsModule {
   override def kotlinVersion = "1.9.25"
   override def kotlinJsRunTarget = Some(RunTarget.Node)
   override def mvnDeps = Seq(
-    mvn"org.jetbrains.kotlinx:kotlinx-html:0.11.0"
+    mvn"org.jetbrains.kotlinx:kotlinx-html:0.12.0"
   )
   object test extends KotlinJsModule, KotestTests {
     override def kotestVersion = "5.9.1"
diff --git a/example/kotlinlib/web/5-webapp-kotlinjs/build.mill b/example/kotlinlib/web/5-webapp-kotlinjs/build.mill
index ef13f5a567b6..b86a36d4ffcb 100644
--- a/example/kotlinlib/web/5-webapp-kotlinjs/build.mill
+++ b/example/kotlinlib/web/5-webapp-kotlinjs/build.mill
@@ -11,7 +11,7 @@ object `package` extends KotlinModule {
 
   override def kotlinVersion = "2.2.20"
   def ktorVersion = "2.3.12"
-  def kotlinHtmlVersion = "0.11.0"
+  def kotlinHtmlVersion = "0.12.0"
 
   override def mainClass = Some("webapp.WebApp")
 
diff --git a/example/kotlinlib/web/6-webapp-kotlinjs-shared/build.mill b/example/kotlinlib/web/6-webapp-kotlinjs-shared/build.mill
index aa4d01310658..6d38edf14e0a 100644
--- a/example/kotlinlib/web/6-webapp-kotlinjs-shared/build.mill
+++ b/example/kotlinlib/web/6-webapp-kotlinjs-shared/build.mill
@@ -16,7 +16,7 @@ trait AppKotlinJsModule extends AppKotlinModule, KotlinJsModule
 object `package` extends AppKotlinModule {
 
   def ktorVersion = "2.3.12"
-  def kotlinHtmlVersion = "0.11.0"
+  def kotlinHtmlVersion = "0.12.0"
   def kotlinxSerializationVersion = "1.6.3"
 
   override def mainClass = Some("webapp.WebApp")
diff --git a/mill-build/src/millbuild/Deps.scala b/mill-build/src/millbuild/Deps.scala
index 1e5773e43dee..b12c1d176f6b 100644
--- a/mill-build/src/millbuild/Deps.scala
+++ b/mill-build/src/millbuild/Deps.scala
@@ -297,7 +297,7 @@ object Deps {
     val jupiterInterface6_runtime = mvn"com.github.sbt.junit:jupiter-interface:0.17.0"
     val kotestJvm_runtime =
       mvn"io.kotest:kotest-framework-multiplatform-plugin-embeddable-compiler:5.9.1"
-    val kotlinxHtmlJvm_runtime = mvn"org.jetbrains.kotlinx:kotlinx-html:0.11.0"
+    val kotlinxHtmlJvm_runtime = mvn"org.jetbrains.kotlinx:kotlinx-html:0.12.0"
     val koverCli_runtime = mvn"org.jetbrains.kotlinx:kover-cli:$koverVersion_runtime"
     val koverJvmAgent_runtime = mvn"org.jetbrains.kotlinx:kover-jvm-agent:$koverVersion_runtime"
     val ktfmt_runtime = mvn"com.facebook:ktfmt:0.58"