diff --git a/dist/index.js b/dist/index.js
index f756abb..467b8aa 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -11549,13 +11549,17 @@ function getWorkingDirectory() {
     }
     return workdir;
 }
+function parseTOMLNormalized(input) {
+    const normalized = input.replace(/\r\n$/g, '\n');
+    return (0, toml_1.parse)(normalized);
+}
 function getManifestDir(args) {
     const workdir = getWorkingDirectory();
     const manifestPath = getCliValue(args, '--manifest-path') || getCliValue(args, '-m');
     return manifestPath ? path.dirname(path.join(workdir, manifestPath)) : workdir;
 }
 function parseRustToolchain(content) {
-    const toml = (0, toml_1.parse)(content.toString());
+    const toml = parseTOMLNormalized(content.toString());
     const toolchain = toml === null || toml === void 0 ? void 0 : toml.toolchain;
     return (toolchain === null || toolchain === void 0 ? void 0 : toolchain.channel) || '';
 }
@@ -11650,7 +11654,7 @@ async function findVersion(args) {
         const pyprojectToml = path.join(manifestDir, 'pyproject.toml');
         if ((0, fs_1.existsSync)(pyprojectToml)) {
             const content = await fs_1.promises.readFile(pyprojectToml);
-            const toml = (0, toml_1.parse)(content.toString());
+            const toml = parseTOMLNormalized(content.toString());
             const buildSystem = (toml['build-system'] || {});
             const requires = (buildSystem['requires'] || []);
             const maturin = requires.find(req => req.startsWith('maturin'));
diff --git a/src/index.ts b/src/index.ts
index eb69db0..ab4992e 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -221,6 +221,12 @@ function getWorkingDirectory(): string {
   return workdir
 }
 
+function parseTOMLNormalized(input: string): JsonMap {
+  // Normalize CRLF to LF to avoid hitting https://github.com/iarna/iarna-toml/issues/33
+  const normalized = input.replace(/\r\n$/g, '\n')
+  return parseTOML(normalized)
+}
+
 function getManifestDir(args: string[]): string {
   const workdir = getWorkingDirectory()
   const manifestPath =
@@ -229,7 +235,7 @@ function getManifestDir(args: string[]): string {
 }
 
 function parseRustToolchain(content: string): string {
-  const toml = parseTOML(content.toString())
+  const toml = parseTOMLNormalized(content.toString())
   const toolchain = toml?.toolchain as JsonMap
   return (toolchain?.channel as string) || ''
 }
@@ -356,7 +362,7 @@ async function findVersion(args: string[]): Promise<string> {
     const pyprojectToml = path.join(manifestDir, 'pyproject.toml')
     if (existsSync(pyprojectToml)) {
       const content = await fs.readFile(pyprojectToml)
-      const toml = parseTOML(content.toString())
+      const toml = parseTOMLNormalized(content.toString())
       const buildSystem = (toml['build-system'] || {}) as JsonMap
       const requires = (buildSystem['requires'] || []) as string[]
       const maturin = requires.find(req => req.startsWith('maturin'))