diff --git a/pkgs/by-name/co/codebook/package.nix b/pkgs/by-name/co/codebook/package.nix
index 455de0a48643..6cccddb1caf5 100644
--- a/pkgs/by-name/co/codebook/package.nix
+++ b/pkgs/by-name/co/codebook/package.nix
@@ -8,17 +8,17 @@
 
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "codebook";
-  version = "0.3.18";
+  version = "0.3.20";
 
   src = fetchFromGitHub {
     owner = "blopker";
     repo = "codebook";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-KRygy6YC7W7V0TFarKSnCS9Ww3M8q3xJvg925aolLmM=";
+    hash = "sha256-lsjP230lgQDOLmU4fWR4oUyQ4P2hH5YB9ZvC8ZjeFf0=";
   };
 
   buildAndTestSubdir = "crates/codebook-lsp";
-  cargoHash = "sha256-HAJglGtOy+OMZoB50Uz5vrf8IXqBKMMO/Hr9Lcry2+Q=";
+  cargoHash = "sha256-ifs3C2nNDv3pXq4hfCtBS455Sj4FVz7VEoR5LQIUHFQ=";
 
   CARGO_PROFILE_RELEASE_LTO = "fat";
   CARGO_PROFILE_RELEASE_CODEGEN_UNITS = "1";