diff --git a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/isomorphic/build.rs b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/isomorphic/build.rs
index 8da04be..70f37a1 100644
--- a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/isomorphic/build.rs
+++ b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/isomorphic/build.rs
@@ -5,6 +5,7 @@ use std::path::{Path, PathBuf};
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     let gpu_crate_path = Path::new("../../../gpu/tiling_2d");
+    println!("cargo::rerun-if-changed={}", gpu_crate_path.display());
 
     // Compile the shader crate with SpirvBuilder.
     let result = SpirvBuilder::new(gpu_crate_path, "spirv-unknown-vulkan1.2")
diff --git a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/naive/build.rs b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/naive/build.rs
index 9350a1f..55273ef 100644
--- a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/naive/build.rs
+++ b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/naive/build.rs
@@ -5,6 +5,7 @@ use std::path::{Path, PathBuf};
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     let gpu_crate_path = Path::new("../../../gpu/naive");
+    println!("cargo::rerun-if-changed={}", gpu_crate_path.display());
 
     // Compile the shader crate with SpirvBuilder.
     let result = SpirvBuilder::new(gpu_crate_path, "spirv-unknown-vulkan1.2")
diff --git a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_1d/build.rs b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_1d/build.rs
index 6912537..90ceb17 100644
--- a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_1d/build.rs
+++ b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_1d/build.rs
@@ -5,6 +5,7 @@ use std::path::{Path, PathBuf};
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     let gpu_crate_path = Path::new("../../../gpu/tiling_1d");
+    println!("cargo::rerun-if-changed={}", gpu_crate_path.display());
 
     // Compile the shader crate with SpirvBuilder.
     let result = SpirvBuilder::new(gpu_crate_path, "spirv-unknown-vulkan1.2")
diff --git a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_1d_loop/build.rs b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_1d_loop/build.rs
index db5a980..d408242 100644
--- a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_1d_loop/build.rs
+++ b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_1d_loop/build.rs
@@ -5,6 +5,7 @@ use std::path::{Path, PathBuf};
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     let gpu_crate_path = Path::new("../../../gpu/tiling_1d_loop");
+    println!("cargo::rerun-if-changed={}", gpu_crate_path.display());
 
     // Compile the shader crate with SpirvBuilder.
     let result = SpirvBuilder::new(gpu_crate_path, "spirv-unknown-vulkan1.2")
diff --git a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_2d/build.rs b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_2d/build.rs
index 8da04be..70f37a1 100644
--- a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_2d/build.rs
+++ b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/tiling_2d/build.rs
@@ -5,6 +5,7 @@ use std::path::{Path, PathBuf};
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     let gpu_crate_path = Path::new("../../../gpu/tiling_2d");
+    println!("cargo::rerun-if-changed={}", gpu_crate_path.display());
 
     // Compile the shader crate with SpirvBuilder.
     let result = SpirvBuilder::new(gpu_crate_path, "spirv-unknown-vulkan1.2")
diff --git a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/workgroup_256/build.rs b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/workgroup_256/build.rs
index ed09395..dbe7bd2 100644
--- a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/workgroup_256/build.rs
+++ b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/workgroup_256/build.rs
@@ -5,6 +5,7 @@ use std::path::{Path, PathBuf};
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     let gpu_crate_path = Path::new("../../../gpu/workgroup_256");
+    println!("cargo::rerun-if-changed={}", gpu_crate_path.display());
 
     // Compile the shader crate with SpirvBuilder.
     let result = SpirvBuilder::new(gpu_crate_path, "spirv-unknown-vulkan1.2")
diff --git a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/workgroup_2d/build.rs b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/workgroup_2d/build.rs
index ea582b7..c058392 100644
--- a/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/workgroup_2d/build.rs
+++ b/blog/2024-11-25-optimizing-matmul/code/crates/cpu/compiled_for_gpu/workgroup_2d/build.rs
@@ -5,6 +5,7 @@ use std::path::{Path, PathBuf};
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     let gpu_crate_path = Path::new("../../../gpu/workgroup_2d");
+    println!("cargo::rerun-if-changed={}", gpu_crate_path.display());
 
     // Compile the shader crate with SpirvBuilder.
     let result = SpirvBuilder::new(gpu_crate_path, "spirv-unknown-vulkan1.2")