diff --git a/README.md b/README.md
index ab4e172..a3faf69 100644
--- a/README.md
+++ b/README.md
@@ -97,6 +97,7 @@ We provide Jupyter notebook tutorials in `docs/tutorials/`:
 | `06_power_analysis.ipynb` | Power analysis, MDE, sample size calculations, simulation-based power |
 | `07_pretrends_power.ipynb` | Pre-trends power analysis (Roth 2022), MDV, power curves |
 | `08_triple_diff.ipynb` | Triple Difference (DDD) estimation with proper covariate handling |
+| `09_real_world_examples.ipynb` | Real-world data examples (Card-Krueger, Castle Doctrine, Divorce Laws) |
 
 ## Data Preparation
 
diff --git a/diff_diff/__init__.py b/diff_diff/__init__.py
index 6782622..f2cf888 100644
--- a/diff_diff/__init__.py
+++ b/diff_diff/__init__.py
@@ -126,7 +126,7 @@
     load_mpdta,
 )
 
-__version__ = "2.0.3"
+__version__ = "2.0.4"
 __all__ = [
     # Estimators
     "DifferenceInDifferences",
diff --git a/pyproject.toml b/pyproject.toml
index 41556b2..d73637a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "maturin"
 
 [project]
 name = "diff-diff"
-version = "2.0.3"
+version = "2.0.4"
 description = "A library for Difference-in-Differences causal inference analysis"
 readme = "README.md"
 license = "MIT"
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index aed204f..6a2c1c2 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "diff_diff_rust"
-version = "2.0.3"
+version = "2.0.4"
 edition = "2021"
 description = "Rust backend for diff-diff DiD library"
 license = "MIT"