diff --git a/CHANGELOG.md b/CHANGELOG.md
index bb4c8688..d1c65a6e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,7 +16,9 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 - Update `release-plz@latest` to 0.3.130.
 
-- Update `cargo-lambda@latest` to 1.8.2.
+- Update `cargo-lambda@latest` to 1.8.1.
+
+- Downgrade `cargo-spellcheck@latest` to 0.15.1. ([#932](https://github.com/taiki-e/install-action/pull/932))
 
 ## [2.49.43] - 2025-04-01
 
diff --git a/manifests/cargo-lambda.json b/manifests/cargo-lambda.json
index cc4a9b25..c3b2fc2e 100644
--- a/manifests/cargo-lambda.json
+++ b/manifests/cargo-lambda.json
@@ -20,13 +20,13 @@
   },
   "license_markdown": "[MIT](https://github.com/cargo-lambda/cargo-lambda/blob/main/LICENSE)",
   "latest": {
-    "version": "1.8.2"
+    "version": "1.8.1"
   },
   "1": {
-    "version": "1.8.2"
+    "version": "1.8.1"
   },
   "1.8": {
-    "version": "1.8.2"
+    "version": "1.8.1"
   },
   "1.8.2": {
     "x86_64_linux_musl": {
diff --git a/manifests/cargo-spellcheck.json b/manifests/cargo-spellcheck.json
index 29ba0363..38aac1f4 100644
--- a/manifests/cargo-spellcheck.json
+++ b/manifests/cargo-spellcheck.json
@@ -10,10 +10,10 @@
   },
   "license_markdown": "[LGPLv2.1](https://github.com/drahnr/cargo-spellcheck/blob/master/LICENSE-LGPL)",
   "latest": {
-    "version": "0.15.2"
+    "version": "0.15.1"
   },
   "0.15": {
-    "version": "0.15.2"
+    "version": "0.15.1"
   },
   "0.15.2": {
     "x86_64_linux_gnu": {
diff --git a/manifests/wasmtime.json b/manifests/wasmtime.json
index 9bb5a70f..7b95f7bf 100644
--- a/manifests/wasmtime.json
+++ b/manifests/wasmtime.json
@@ -2775,7 +2775,7 @@
     }
   },
   "0.22": {
-    "version": "0.22.1"
+    "version": "0.22.0"
   },
   "0.22.1": {
     "x86_64_linux_gnu": {
diff --git a/manifests/zola.json b/manifests/zola.json
index 3c220c06..a02fac8d 100644
--- a/manifests/zola.json
+++ b/manifests/zola.json
@@ -1,5 +1,5 @@
 {
-  "rust_crate": "zola",
+  "rust_crate": null,
   "template": {
     "x86_64_linux_gnu": {
       "url": "https://github.com/getzola/zola/releases/download/v${version}/zola-v${version}-x86_64-unknown-linux-gnu.tar.gz"
diff --git a/tools/codegen/base/zola.json b/tools/codegen/base/zola.json
index 9b11b03f..251cb2d3 100644
--- a/tools/codegen/base/zola.json
+++ b/tools/codegen/base/zola.json
@@ -1,7 +1,6 @@
 {
   "repository": "https://github.com/getzola/zola",
   "tag_prefix": "v",
-  "rust_crate": "${package}",
   "asset_name": "${package}-v${version}-${rust_target}.tar.gz",
   "platform": {
     "x86_64_linux_gnu": {},
diff --git a/tools/codegen/src/main.rs b/tools/codegen/src/main.rs
index 22de2629..f30b23a4 100644
--- a/tools/codegen/src/main.rs
+++ b/tools/codegen/src/main.rs
@@ -490,12 +490,14 @@ fn main() -> Result<()> {
             if let Some(crates_io_info) = &crates_io_info {
                 if let Some(v) = crates_io_info.versions.iter().find(|v| v.num == *version) {
                     if v.yanked {
-                        continue;
+                        continue; // Exclude yanked version from candidate for "latest".
                     }
+                } else {
+                    continue; // Exclude version not released on crates.io from candidate for "latest".
                 }
             }
             if base_info.broken.contains(version) {
-                continue;
+                continue; // Exclude version marked as broken from candidate for "latest".
             }
             if !(version.major == 0 && version.minor == 0) {
                 manifests.map.insert(
@@ -618,15 +620,17 @@ fn replace_vars(
     platform: Option<HostPlatform>,
     rust_crate: Option<&str>,
 ) -> Result<String> {
-    const RUST_SPECIFIC: &[(&str, fn(HostPlatform) -> &'static str)] = &[
+    static RUST_SPECIFIC: &[(&str, fn(HostPlatform) -> &'static str)] = &[
         ("${rust_target}", HostPlatform::rust_target),
         ("${rust_target_arch}", HostPlatform::rust_target_arch),
         ("${rust_target_os}", HostPlatform::rust_target_os),
     ];
+    // zola is Rust crate, but is not released on crates.io.
+    static KNOWN_RUST_CRATE_NOT_IN_CRATES_IO: &[&str] = &["zola"];
     let mut s = s.replace("${package}", package).replace("${tool}", package);
     if let Some(platform) = platform {
         s = s.replace("${exe}", platform.exe_suffix());
-        if rust_crate.is_some() {
+        if rust_crate.is_some() || KNOWN_RUST_CRATE_NOT_IN_CRATES_IO.contains(&package) {
             for &(var, f) in RUST_SPECIFIC {
                 s = s.replace(var, f(platform));
             }