diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b1459e1..0ff6bc0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -64,6 +64,39 @@ jobs:
           fi
         env:
           UV_VERSION: ${{ steps.setup-uv.outputs.uv-version }}
+  test-pyproject-file-version:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install version 0.5.14
+        id: setup-uv
+        uses: ./
+        with:
+          pyproject-file: "__tests__/fixtures/pyproject-toml-project/pyproject.toml"
+      - name: Correct version gets installed
+        run: |
+          if [ "$UV_VERSION" != "0.5.14" ]; then
+            exit 1
+          fi
+        env:
+          UV_VERSION: ${{ steps.setup-uv.outputs.uv-version }}
+  test-uv-file-version:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install version 0.5.15
+        id: setup-uv
+        uses: ./
+        with:
+          pyproject-file: "__tests__/fixtures/uv-toml-project/pyproject.toml"
+          uv-file: "__tests__/fixtures/uv-toml-project/uv.toml"
+      - name: Correct version gets installed
+        run: |
+          if [ "$UV_VERSION" != "0.5.15" ]; then
+            exit 1
+          fi
+        env:
+          UV_VERSION: ${{ steps.setup-uv.outputs.uv-version }}
   test-checksum:
     runs-on: ${{ matrix.os }}
     strategy:
diff --git a/__tests__/fixtures/pyproject-toml-project/.python-version b/__tests__/fixtures/pyproject-toml-project/.python-version
new file mode 100644
index 0000000..2c07333
--- /dev/null
+++ b/__tests__/fixtures/pyproject-toml-project/.python-version
@@ -0,0 +1 @@
+3.11
diff --git a/__tests__/fixtures/pyproject-toml-project/README.md b/__tests__/fixtures/pyproject-toml-project/README.md
new file mode 100644
index 0000000..e69de29
diff --git a/__tests__/fixtures/pyproject-toml-project/hello.py b/__tests__/fixtures/pyproject-toml-project/hello.py
new file mode 100644
index 0000000..e11f88e
--- /dev/null
+++ b/__tests__/fixtures/pyproject-toml-project/hello.py
@@ -0,0 +1,6 @@
+def main():
+    print("Hello from pyproject-toml-project!")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/__tests__/fixtures/pyproject-toml-project/pyproject.toml b/__tests__/fixtures/pyproject-toml-project/pyproject.toml
new file mode 100644
index 0000000..55ad9ab
--- /dev/null
+++ b/__tests__/fixtures/pyproject-toml-project/pyproject.toml
@@ -0,0 +1,10 @@
+[project]
+name = "pyproject-toml-project"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.11"
+dependencies = []
+
+[tool.uv]
+required-version = "==0.5.14"
diff --git a/__tests__/fixtures/uv-toml-project/.python-version b/__tests__/fixtures/uv-toml-project/.python-version
new file mode 100644
index 0000000..2c07333
--- /dev/null
+++ b/__tests__/fixtures/uv-toml-project/.python-version
@@ -0,0 +1 @@
+3.11
diff --git a/__tests__/fixtures/uv-toml-project/README.md b/__tests__/fixtures/uv-toml-project/README.md
new file mode 100644
index 0000000..e69de29
diff --git a/__tests__/fixtures/uv-toml-project/hello.py b/__tests__/fixtures/uv-toml-project/hello.py
new file mode 100644
index 0000000..5a19d79
--- /dev/null
+++ b/__tests__/fixtures/uv-toml-project/hello.py
@@ -0,0 +1,6 @@
+def main():
+    print("Hello from uv-toml-project!")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/__tests__/fixtures/uv-toml-project/pyproject.toml b/__tests__/fixtures/uv-toml-project/pyproject.toml
new file mode 100644
index 0000000..149c6e8
--- /dev/null
+++ b/__tests__/fixtures/uv-toml-project/pyproject.toml
@@ -0,0 +1,10 @@
+[project]
+name = "uv-toml-project"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.11"
+dependencies = []
+
+[tool.uv]
+required-version = "==0.5.14"
diff --git a/__tests__/fixtures/uv-toml-project/uv.toml b/__tests__/fixtures/uv-toml-project/uv.toml
new file mode 100644
index 0000000..b7e60ac
--- /dev/null
+++ b/__tests__/fixtures/uv-toml-project/uv.toml
@@ -0,0 +1 @@
+required-version = "==0.5.15"
diff --git a/action.yml b/action.yml
index 9adec89..9c6893c 100644
--- a/action.yml
+++ b/action.yml
@@ -4,8 +4,14 @@ description:
 author: "astral-sh"
 inputs:
   version:
-    description: "The version of uv to install"
-    default: "latest"
+    description: "The version of uv to install e.g., `0.5.0` Defaults to the version in pyproject.toml or 'latest'."
+    default: ""
+  pyproject-file:
+    description: "Path to a pyproject.toml"
+    default: ""
+  uv-file:
+    description: "Path to a uv.toml"
+    default: ""
   python-version:
     description: "The version of Python to set UV_PYTHON to"
     required: false
@@ -18,7 +24,7 @@ inputs:
     required: false
     default: ${{ github.token }}
   enable-cache:
-    description: "Enable caching of the uv cache"
+    description: "Enable uploading of the uv cache"
     default: "auto"
   cache-dependency-glob:
     description:
diff --git a/dist/save-cache/index.js b/dist/save-cache/index.js
index 29647f5..5f7403d 100644
Binary files a/dist/save-cache/index.js and b/dist/save-cache/index.js differ
diff --git a/dist/setup/index.js b/dist/setup/index.js
index c16e105..c3cd887 100644
Binary files a/dist/setup/index.js and b/dist/setup/index.js differ
diff --git a/package-lock.json b/package-lock.json
index 2ed47d5..c5455ee 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,6 +16,7 @@
         "@actions/glob": "^0.5.0",
         "@actions/io": "^1.1.3",
         "@actions/tool-cache": "^2.0.1",
+        "@iarna/toml": "^2.2.5",
         "@octokit/rest": "^21.0.2"
       },
       "devDependencies": {
@@ -1104,6 +1105,11 @@
         "node": ">=14"
       }
     },
+    "node_modules/@iarna/toml": {
+      "version": "2.2.5",
+      "resolved": "https://registry.npmjs.org/@iarna/toml/-/toml-2.2.5.tgz",
+      "integrity": "sha512-trnsAYxU3xnS1gPHPyU961coFyLkh4gAD/0zQ5mymY4yOZ+CYvsPqUbOFSw0aDM4y0tV7tiFxL/1XfXPNC6IPg=="
+    },
     "node_modules/@istanbuljs/load-nyc-config": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/@istanbuljs/load-nyc-config/-/load-nyc-config-1.1.0.tgz",
@@ -5918,6 +5924,11 @@
       "resolved": "https://registry.npmjs.org/@fastify/busboy/-/busboy-2.1.0.tgz",
       "integrity": "sha512-+KpH+QxZU7O4675t3mnkQKcZZg56u+K/Ct2K+N2AZYNVK8kyeo/bI18tI8aPm3tvNNRyTWfj6s5tnGNlcbQRsA=="
     },
+    "@iarna/toml": {
+      "version": "2.2.5",
+      "resolved": "https://registry.npmjs.org/@iarna/toml/-/toml-2.2.5.tgz",
+      "integrity": "sha512-trnsAYxU3xnS1gPHPyU961coFyLkh4gAD/0zQ5mymY4yOZ+CYvsPqUbOFSw0aDM4y0tV7tiFxL/1XfXPNC6IPg=="
+    },
     "@istanbuljs/load-nyc-config": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/@istanbuljs/load-nyc-config/-/load-nyc-config-1.1.0.tgz",
diff --git a/package.json b/package.json
index bf6c5d2..4230206 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,8 @@
     "@actions/glob": "^0.5.0",
     "@actions/io": "^1.1.3",
     "@actions/tool-cache": "^2.0.1",
-    "@octokit/rest": "^21.0.2"
+    "@octokit/rest": "^21.0.2",
+    "@iarna/toml": "^2.2.5"
   },
   "devDependencies": {
     "@biomejs/biome": "1.9.4",
diff --git a/src/setup-uv.ts b/src/setup-uv.ts
index 408b005..9195c66 100644
--- a/src/setup-uv.ts
+++ b/src/setup-uv.ts
@@ -18,12 +18,16 @@ import {
   checkSum,
   enableCache,
   githubToken,
+  pyProjectFile,
   pythonVersion,
   toolBinDir,
   toolDir,
-  version,
+  uvFile,
+  version as versionInput,
 } from "./utils/inputs";
 import * as exec from "@actions/exec";
+import fs from "node:fs";
+import { getUvVersionFromConfigFile } from "./utils/pyproject";
 
 async function run(): Promise<void> {
   const platform = getPlatform();
@@ -36,13 +40,7 @@ async function run(): Promise<void> {
     if (arch === undefined) {
       throw new Error(`Unsupported architecture: ${process.arch}`);
     }
-    const setupResult = await setupUv(
-      platform,
-      arch,
-      version,
-      checkSum,
-      githubToken,
-    );
+    const setupResult = await setupUv(platform, arch, checkSum, githubToken);
 
     addUvToPath(setupResult.uvDir);
     addToolBinToPath();
@@ -66,11 +64,10 @@ async function run(): Promise<void> {
 async function setupUv(
   platform: Platform,
   arch: Architecture,
-  versionInput: string,
   checkSum: string | undefined,
   githubToken: string,
 ): Promise<{ uvDir: string; version: string }> {
-  const resolvedVersion = await resolveVersion(versionInput, githubToken);
+  const resolvedVersion = await determineVersion();
   const toolCacheResult = tryGetFromToolCache(arch, resolvedVersion);
   if (toolCacheResult.installedPath) {
     core.info(`Found uv in tool-cache for ${toolCacheResult.version}`);
@@ -94,6 +91,28 @@ async function setupUv(
   };
 }
 
+async function determineVersion(): Promise<string> {
+  if (versionInput !== "") {
+    return await resolveVersion(versionInput, githubToken);
+  }
+  const configFile = uvFile !== "" ? uvFile : pyProjectFile;
+  if (configFile !== "") {
+    const versionFromConfigFile = getUvVersionFromConfigFile(configFile);
+    if (versionFromConfigFile === undefined) {
+      core.warning(
+        `Could not find required-version under [tool.uv] in ${configFile}. Falling back to latest`,
+      );
+    }
+    return await resolveVersion(versionFromConfigFile || "latest", githubToken);
+  }
+  if (!fs.existsSync("uv.toml") && !fs.existsSync("pyproject.toml")) {
+    return await resolveVersion("latest", githubToken);
+  }
+  const versionFile = fs.existsSync("uv.toml") ? "uv.toml" : "pyproject.toml";
+  const versionFromConfigFile = getUvVersionFromConfigFile(versionFile);
+  return await resolveVersion(versionFromConfigFile || "latest", githubToken);
+}
+
 function addUvToPath(cachedPath: string): void {
   core.addPath(cachedPath);
   core.info(`Added ${cachedPath} to the path`);
diff --git a/src/utils/inputs.ts b/src/utils/inputs.ts
index 470a9d9..6f72236 100644
--- a/src/utils/inputs.ts
+++ b/src/utils/inputs.ts
@@ -2,6 +2,8 @@ import * as core from "@actions/core";
 import path from "node:path";
 
 export const version = core.getInput("version");
+export const pyProjectFile = core.getInput("pyproject-file");
+export const uvFile = core.getInput("uv-file");
 export const pythonVersion = core.getInput("python-version");
 export const checkSum = core.getInput("checksum");
 export const enableCache = getEnableCache();
diff --git a/src/utils/pyproject.ts b/src/utils/pyproject.ts
new file mode 100644
index 0000000..c727855
--- /dev/null
+++ b/src/utils/pyproject.ts
@@ -0,0 +1,38 @@
+import fs from "node:fs";
+import * as core from "@actions/core";
+import * as toml from "@iarna/toml";
+
+export function getUvVersionFromConfigFile(
+  filePath: string,
+): string | undefined {
+  if (!fs.existsSync(filePath)) {
+    core.warning(`Could not find file: ${filePath}`);
+    return undefined;
+  }
+  let requiredVersion = getRequiredVersion(filePath);
+
+  if (requiredVersion?.startsWith("==")) {
+    requiredVersion = requiredVersion.slice(2);
+  }
+  if (requiredVersion !== undefined) {
+    core.info(
+      `Found required-version for uv in ${filePath}: ${requiredVersion}`,
+    );
+  }
+  return requiredVersion;
+}
+
+function getRequiredVersion(filePath: string): string | undefined {
+  const fileContent = fs.readFileSync(filePath, "utf-8");
+
+  if (filePath.endsWith("pyproject.toml")) {
+    const tomlContent = toml.parse(fileContent) as {
+      tool?: { uv?: { "required-version"?: string } };
+    };
+    return tomlContent?.tool?.uv?.["required-version"];
+  }
+  const tomlContent = toml.parse(fileContent) as {
+    "required-version"?: string;
+  };
+  return tomlContent["required-version"];
+}