diff --git a/Cargo.toml b/Cargo.toml
index d99803cd..0f142618 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ version = "0.2.0"
 
 [dependencies]
 bootloader_precompiled = "0.2.0"
-spin = "0.4.6"
+spin = "0.4.9"
 volatile = "0.2.3"
 uart_16550 = "0.1.0"
 x86_64 = "0.2.8"
diff --git a/blog/content/second-edition/posts/03-vga-text-buffer/index.md b/blog/content/second-edition/posts/03-vga-text-buffer/index.md
index e21bcd3e..5099621c 100644
--- a/blog/content/second-edition/posts/03-vga-text-buffer/index.md
+++ b/blog/content/second-edition/posts/03-vga-text-buffer/index.md
@@ -500,7 +500,7 @@ To use a spinning mutex, we can add the [spin crate] as a dependency:
 ```toml
 # in Cargo.toml
 [dependencies]
-spin = "0.4.6"
+spin = "0.4.9"
 ```
 
 ```rust