diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8fe7ed2..de2b1ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.3.1
+
+- Fixed broken tag parsing.
+
 # 0.3.0
 
 - Updated to support monorepo based tags.
diff --git a/index.ts b/index.ts
index 79f076d..a724d4d 100644
--- a/index.ts
+++ b/index.ts
@@ -39,16 +39,13 @@ function detectVersionAndProject() {
 		TAG = tag;
 
 		// project-v1.0.0
-		if (project.includes('-')) {
-			const lastIndex = project.lastIndexOf('-');
-
-			project = project.slice(0, lastIndex);
-			version = project.slice(lastIndex + 1);
+		if (tag.includes('-')) {
+			[project, version] = tag.split('-', 2);
 		}
 
 		// project@v1.0.0
-		else if (project.includes('@')) {
-			[project, version] = project.split('@');
+		else if (tag.includes('@')) {
+			[project, version] = tag.split('@', 2);
 		}
 
 		// v1.0.0
diff --git a/package.json b/package.json
index 94c2ac5..c824670 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@moonrepo/build-wasm-plugin",
-  "version": "0.2.3",
+  "version": "0.3.1",
   "description": "A GitHub action to build, optimize, and prepare WASM plugins for release.",
   "main": "dist/index.js",
   "scripts": {