diff --git a/docs/docs/javadoc.md b/docs/docs/javadoc.md
index b1bdbf0..06ec487 100644
--- a/docs/docs/javadoc.md
+++ b/docs/docs/javadoc.md
@@ -41,3 +41,11 @@ The engine API documentation covers the core engine and all official subsystems.
   - [graphics:glfw](https://jd.engine.staropensource.de/v1-alpha3/graphics:glfw/)
   - [graphics:opengl](https://jd.engine.staropensource.de/v1-alpha3/graphics:opengl/)
   - [graphics:vulkan](https://jd.engine.staropensource.de/v1-alpha3/graphics:vulkan/)
+- v1-alpha4
+  - [All subsystem](https://jd.engine.staropensource.de/v1-alpha4/all/)
+  - [base](https://jd.engine.staropensource.de/v1-alpha4/base/)
+  - [testing](https://jd.engine.staropensource.de/v1-alpha4/testing/)
+  - [ansi](https://jd.engine.staropensource.de/v1-alpha4/ansi/)
+  - [slf4j-compat](https://jd.engine.staropensource.de/v1-alpha4/slf4j-compat/)
+  - [windowing](https://jd.engine.staropensource.de/v1-alpha4/windowing/)
+  - [windowing:glfw](https://jd.engine.staropensource.de/v1-alpha4/windowing:glfw/)