diff --git a/lib/manager/poetry/__snapshots__/artifacts.spec.ts.snap b/lib/manager/poetry/__snapshots__/artifacts.spec.ts.snap
index daeea84f5851d7..89b376fad158dd 100644
--- a/lib/manager/poetry/__snapshots__/artifacts.spec.ts.snap
+++ b/lib/manager/poetry/__snapshots__/artifacts.spec.ts.snap
@@ -100,7 +100,7 @@ Array [
     },
   },
   Object {
-    "cmd": "docker run --rm --name=renovate_python --label=renovate_child -v \\"/tmp/github/some/repo\\":\\"/tmp/github/some/repo\\" -w \\"/tmp/github/some/repo\\" renovate/python:2.7.5 bash -l -c \\"pip install 'poetry>=1.0' && poetry update --lock --no-interaction dep1\\"",
+    "cmd": "docker run --rm --name=renovate_python --label=renovate_child -v \\"/tmp/github/some/repo\\":\\"/tmp/github/some/repo\\" -w \\"/tmp/github/some/repo\\" renovate/python:2.7.5 bash -l -c \\"install-tool poetry 1.2.0 && poetry update --lock --no-interaction dep1\\"",
     "options": Object {
       "cwd": "/tmp/github/some/repo",
       "encoding": "utf-8",
@@ -135,7 +135,7 @@ Array [
     },
   },
   Object {
-    "cmd": "docker run --rm --name=renovate_python --label=renovate_child -v \\"/tmp/github/some/repo\\":\\"/tmp/github/some/repo\\" -w \\"/tmp/github/some/repo\\" renovate/python:3.4.2 bash -l -c \\"pip install 'poetry>=1.1.2' setuptools 'poetry-dynamic-versioning>1' && poetry update --lock --no-interaction dep1\\"",
+    "cmd": "docker run --rm --name=renovate_python --label=renovate_child -v \\"/tmp/github/some/repo\\":\\"/tmp/github/some/repo\\" -w \\"/tmp/github/some/repo\\" renovate/python:3.4.2 bash -l -c \\"install-tool poetry 1.2.0 && poetry update --lock --no-interaction dep1\\"",
     "options": Object {
       "cwd": "/tmp/github/some/repo",
       "encoding": "utf-8",
diff --git a/lib/manager/poetry/__snapshots__/extract.spec.ts.snap b/lib/manager/poetry/__snapshots__/extract.spec.ts.snap
index 0cef52a3009249..702718ac84a0af 100644
--- a/lib/manager/poetry/__snapshots__/extract.spec.ts.snap
+++ b/lib/manager/poetry/__snapshots__/extract.spec.ts.snap
@@ -533,9 +533,7 @@ Array [
 
 exports[`manager/poetry/extract extractPackageFile() handles multiple constraint dependencies 1`] = `
 Object {
-  "constraints": Object {
-    "poetry": "poetry>=1.1.2 setuptools poetry-dynamic-versioning",
-  },
+  "constraints": Object {},
   "deps": Array [
     Object {
       "currentValue": "",
diff --git a/lib/manager/poetry/artifacts.spec.ts b/lib/manager/poetry/artifacts.spec.ts
index 02440b20e92d19..07e2cc5fff31b6 100644
--- a/lib/manager/poetry/artifacts.spec.ts
+++ b/lib/manager/poetry/artifacts.spec.ts
@@ -12,6 +12,7 @@ import * as _hostRules from '../../util/host-rules';
 import type { UpdateArtifactsConfig } from '../types';
 import { updateArtifacts } from './artifacts';
 
+const pyproject1toml = loadFixture('pyproject.1.toml');
 const pyproject10toml = loadFixture('pyproject.10.toml');
 
 jest.mock('fs-extra');
@@ -131,9 +132,19 @@ describe('manager/poetry/artifacts', () => {
   });
   it('returns updated poetry.lock using docker', async () => {
     GlobalConfig.set({ ...adminConfig, binarySource: 'docker' });
+    // poetry.lock
     fs.readFile.mockResolvedValueOnce('[metadata]\n' as any);
     const execSnapshots = mockExecAll(exec);
     fs.readFile.mockReturnValueOnce('New poetry.lock' as any);
+    // poetry
+    datasource.getPkgReleases.mockResolvedValueOnce({
+      releases: [
+        { version: '1.0.0' },
+        { version: '1.1.0' },
+        { version: '1.2.0' },
+      ],
+    });
+    // python
     datasource.getPkgReleases.mockResolvedValueOnce({
       releases: [{ version: '2.7.5' }, { version: '3.4.2' }],
     });
@@ -142,12 +153,11 @@ describe('manager/poetry/artifacts', () => {
       await updateArtifacts({
         packageFileName: 'pyproject.toml',
         updatedDeps,
-        newPackageFileContent: '{}',
+        newPackageFileContent: pyproject1toml,
         config: {
           ...config,
           constraints: {
             python: '~2.7 || ^3.4',
-            poetry: 'poetry>=1.1.2 setuptools poetry-dynamic-versioning>1',
           },
         },
       })
@@ -156,11 +166,21 @@ describe('manager/poetry/artifacts', () => {
   });
   it('returns updated poetry.lock using docker (constraints)', async () => {
     GlobalConfig.set({ ...adminConfig, binarySource: 'docker' });
+    // poetry.lock
     fs.readFile.mockResolvedValueOnce(
       '[metadata]\npython-versions = "~2.7 || ^3.4"' as any
     );
     const execSnapshots = mockExecAll(exec);
     fs.readFile.mockReturnValueOnce('New poetry.lock' as any);
+    // poetry
+    datasource.getPkgReleases.mockResolvedValueOnce({
+      releases: [
+        { version: '1.0.0' },
+        { version: '1.1.0' },
+        { version: '1.2.0' },
+      ],
+    });
+    // python
     datasource.getPkgReleases.mockResolvedValueOnce({
       releases: [{ version: '2.7.5' }, { version: '3.3.2' }],
     });
@@ -169,10 +189,10 @@ describe('manager/poetry/artifacts', () => {
       await updateArtifacts({
         packageFileName: 'pyproject.toml',
         updatedDeps,
-        newPackageFileContent: '{}',
+        newPackageFileContent: pyproject1toml,
         config: {
           ...config,
-          constraints: { poetry: 'poetry>=1.0' },
+          constraints: {},
         },
       })
     ).not.toBeNull();
diff --git a/lib/manager/poetry/artifacts.ts b/lib/manager/poetry/artifacts.ts
index 69da0cce0c4cad..69ad411f812351 100644
--- a/lib/manager/poetry/artifacts.ts
+++ b/lib/manager/poetry/artifacts.ts
@@ -4,7 +4,7 @@ import { quote } from 'shlex';
 import { TEMPORARY_ERROR } from '../../constants/error-messages';
 import { logger } from '../../logger';
 import { exec } from '../../util/exec';
-import type { ExecOptions } from '../../util/exec/types';
+import type { ExecOptions, ToolConstraint } from '../../util/exec/types';
 import {
   deleteLocalFile,
   getSiblingFileName,
@@ -12,6 +12,8 @@ import {
   writeLocalFile,
 } from '../../util/fs';
 import { find } from '../../util/host-rules';
+import { regEx } from '../../util/regex';
+import { dependencyPattern } from '../pip_requirements/extract';
 import type {
   UpdateArtifact,
   UpdateArtifactsConfig,
@@ -41,6 +43,39 @@ function getPythonConstraint(
   return undefined;
 }
 
+const pkgValRegex = regEx(`^${dependencyPattern}$`);
+
+function getPoetryRequirement(pyProjectContent: string): string | null {
+  try {
+    const pyproject: PoetryFile = parse(pyProjectContent);
+    // https://python-poetry.org/docs/pyproject/#poetry-and-pep-517
+    const buildBackend = pyproject['build-system']?.['build-backend'];
+    if (
+      (buildBackend === 'poetry.masonry.api' ||
+        buildBackend === 'poetry.core.masonry.api') &&
+      is.nonEmptyArray(pyproject['build-system']?.requires)
+    ) {
+      for (const requirement of pyproject['build-system'].requires) {
+        if (is.nonEmptyString(requirement)) {
+          const pkgValMatch = pkgValRegex.exec(requirement);
+          if (pkgValMatch) {
+            const [, depName, , currVal] = pkgValMatch;
+            if (
+              (depName === 'poetry' || depName === 'poetry_core') &&
+              currVal
+            ) {
+              return currVal.trim();
+            }
+          }
+        }
+      }
+    }
+  } catch (err) {
+    logger.debug({ err }, 'Error parsing pyproject.toml file');
+  }
+  return null;
+}
+
 function getPoetrySources(content: string, fileName: string): PoetrySource[] {
   let pyprojectFile: PoetryFile;
   try {
@@ -125,13 +160,16 @@ export async function updateArtifacts({
       );
     }
     const tagConstraint = getPythonConstraint(existingLockFileContent, config);
-    const poetryRequirement = config.constraints?.poetry || 'poetry';
-    const poetryInstall =
-      'pip install ' + poetryRequirement.split(' ').map(quote).join(' ');
+    const constraint =
+      config.constraints?.poetry || getPoetryRequirement(newPackageFileContent);
     const extraEnv = getSourceCredentialVars(
       newPackageFileContent,
       packageFileName
     );
+    const toolConstraint: ToolConstraint = {
+      toolName: 'poetry',
+      constraint,
+    };
 
     const execOptions: ExecOptions = {
       cwdFile: packageFileName,
@@ -141,7 +179,7 @@ export async function updateArtifacts({
         tagConstraint,
         tagScheme: 'poetry',
       },
-      preCommands: [poetryInstall],
+      toolConstraints: [toolConstraint],
     };
     await exec(cmd, execOptions);
     const newPoetryLockContent = await readLocalFile(lockFileName, 'utf8');
diff --git a/lib/manager/poetry/extract.spec.ts b/lib/manager/poetry/extract.spec.ts
index 066f1c10e22884..e720428a79ff69 100644
--- a/lib/manager/poetry/extract.spec.ts
+++ b/lib/manager/poetry/extract.spec.ts
@@ -40,7 +40,6 @@ describe('manager/poetry/extract', () => {
       expect(res.deps).toMatchSnapshot();
       expect(res.deps).toHaveLength(9);
       expect(res.constraints).toEqual({
-        poetry: 'poetry>=1.0 wheel',
         python: '~2.7 || ^3.4',
       });
     });
diff --git a/lib/manager/poetry/extract.ts b/lib/manager/poetry/extract.ts
index b158dd53bca769..22d4299d4614a2 100644
--- a/lib/manager/poetry/extract.ts
+++ b/lib/manager/poetry/extract.ts
@@ -149,13 +149,6 @@ export async function extractPackageFile(
 
   const constraints: Record<string, any> = {};
 
-  // https://python-poetry.org/docs/pyproject/#poetry-and-pep-517
-  if (
-    pyprojectfile['build-system']?.['build-backend'] === 'poetry.masonry.api'
-  ) {
-    constraints.poetry = pyprojectfile['build-system']?.requires.join(' ');
-  }
-
   if (is.nonEmptyString(pyprojectfile.tool?.poetry?.dependencies?.python)) {
     constraints.python = pyprojectfile.tool?.poetry?.dependencies?.python;
   }
diff --git a/lib/util/exec/buildpack.ts b/lib/util/exec/buildpack.ts
index 27cd762fc033e6..159a90843e14e8 100644
--- a/lib/util/exec/buildpack.ts
+++ b/lib/util/exec/buildpack.ts
@@ -5,6 +5,7 @@ import { logger } from '../../logger';
 import * as allVersioning from '../../versioning';
 import { id as composerVersioningId } from '../../versioning/composer';
 import { id as npmVersioningId } from '../../versioning/npm';
+import { id as pep440VersioningId } from '../../versioning/pep440';
 import { id as semverVersioningId } from '../../versioning/semver';
 import type { ToolConfig, ToolConstraint } from './types';
 
@@ -35,6 +36,11 @@ const allToolConfig: Record<string, ToolConfig> = {
     depName: 'pnpm',
     versioning: npmVersioningId,
   },
+  poetry: {
+    datasource: 'pypi',
+    depName: 'poetry',
+    versioning: pep440VersioningId,
+  },
 };
 
 export function supportsDynamicInstall(toolName: string): boolean {