diff --git a/README.md b/README.md
index 342a7db6a..a0c7941bd 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ To use kdriver, add the following to your `build.gradle.kts`:
 
 ```kotlin
 dependencies {
-    implementation("dev.kdriver:core:0.5.8")
+    implementation("dev.kdriver:core:0.5.9")
 }
 ```
 
diff --git a/build.gradle.kts b/build.gradle.kts
index 8cd2248e0..30fd75455 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -7,7 +7,7 @@ plugins {
 
 allprojects {
     group = "dev.kdriver"
-    version = "0.5.8"
+    version = "0.5.9"
     project.ext.set("url", "https://github.com/cdpdriver/kdriver")
     project.ext.set("license.name", "Apache 2.0")
     project.ext.set("license.url", "https://www.apache.org/licenses/LICENSE-2.0.txt")
diff --git a/core/src/commonMain/kotlin/dev/kdriver/core/browser/Browser.kt b/core/src/commonMain/kotlin/dev/kdriver/core/browser/Browser.kt
index 8d47b48f6..fbf1eb842 100644
--- a/core/src/commonMain/kotlin/dev/kdriver/core/browser/Browser.kt
+++ b/core/src/commonMain/kotlin/dev/kdriver/core/browser/Browser.kt
@@ -62,6 +62,11 @@ interface Browser {
 
     //val cookies: CookieJar
 
+    /**
+     * The process ID of the browser, if available.
+     */
+    val pid: Long?
+
     /**
      * Checks if the browser process has stopped.
      */
diff --git a/core/src/commonMain/kotlin/dev/kdriver/core/browser/DefaultBrowser.kt b/core/src/commonMain/kotlin/dev/kdriver/core/browser/DefaultBrowser.kt
index 0e9a5346f..09d6a4b25 100644
--- a/core/src/commonMain/kotlin/dev/kdriver/core/browser/DefaultBrowser.kt
+++ b/core/src/commonMain/kotlin/dev/kdriver/core/browser/DefaultBrowser.kt
@@ -57,6 +57,9 @@ open class DefaultBrowser(
         }
      */
 
+    override val pid: Long?
+        get() = process?.pid()
+
     override val stopped: Boolean
         get() = process?.isAlive()?.not() ?: true
 
diff --git a/docs/home/quickstart.md b/docs/home/quickstart.md
index 932432d23..bc75eb5f4 100644
--- a/docs/home/quickstart.md
+++ b/docs/home/quickstart.md
@@ -12,7 +12,7 @@ To install, add the dependency to your `build.gradle.kts`:
 
 ```kotlin
 dependencies {
-    implementation("dev.kdriver:core:0.5.8")
+    implementation("dev.kdriver:core:0.5.9")
 }
 ```