diff --git a/lib/modules/manager/poetry/__snapshots__/extract.spec.ts.snap b/lib/modules/manager/poetry/__snapshots__/extract.spec.ts.snap
index 7b215629568f70..b42a6a577429b6 100644
--- a/lib/modules/manager/poetry/__snapshots__/extract.spec.ts.snap
+++ b/lib/modules/manager/poetry/__snapshots__/extract.spec.ts.snap
@@ -400,6 +400,7 @@ exports[`modules/manager/poetry/extract extractPackageFile() extracts multiple d
       "managerData": {
         "nestedVersion": false,
       },
+      "packageName": "extra-dep1",
       "versioning": "poetry",
     },
     {
@@ -410,6 +411,7 @@ exports[`modules/manager/poetry/extract extractPackageFile() extracts multiple d
       "managerData": {
         "nestedVersion": false,
       },
+      "packageName": "extra-dep2",
       "versioning": "poetry",
     },
     {
@@ -420,6 +422,7 @@ exports[`modules/manager/poetry/extract extractPackageFile() extracts multiple d
       "managerData": {
         "nestedVersion": false,
       },
+      "packageName": "extra-dep3",
       "versioning": "poetry",
     },
   ],
@@ -438,6 +441,7 @@ exports[`modules/manager/poetry/extract extractPackageFile() extracts multiple d
     "managerData": {
       "nestedVersion": false,
     },
+    "packageName": "dep1-",
     "versioning": "pep440",
   },
   {
@@ -478,6 +482,7 @@ exports[`modules/manager/poetry/extract extractPackageFile() extracts multiple d
     "managerData": {
       "nestedVersion": false,
     },
+    "packageName": "dev-dep1",
     "versioning": "poetry",
   },
   {
@@ -488,6 +493,7 @@ exports[`modules/manager/poetry/extract extractPackageFile() extracts multiple d
     "managerData": {
       "nestedVersion": false,
     },
+    "packageName": "dev-dep2",
     "skipReason": "unknown-version",
   },
   {
@@ -498,6 +504,7 @@ exports[`modules/manager/poetry/extract extractPackageFile() extracts multiple d
     "managerData": {
       "nestedVersion": false,
     },
+    "packageName": "extra-dep1",
     "versioning": "poetry",
   },
   {
@@ -508,6 +515,7 @@ exports[`modules/manager/poetry/extract extractPackageFile() extracts multiple d
     "managerData": {
       "nestedVersion": false,
     },
+    "packageName": "extra-dep2",
     "versioning": "poetry",
   },
   {
@@ -518,6 +526,7 @@ exports[`modules/manager/poetry/extract extractPackageFile() extracts multiple d
     "managerData": {
       "nestedVersion": false,
     },
+    "packageName": "extra-dep3",
     "versioning": "poetry",
   },
 ]
diff --git a/lib/modules/manager/poetry/extract.spec.ts b/lib/modules/manager/poetry/extract.spec.ts
index 423af4f6a301c5..a1a459499491b6 100644
--- a/lib/modules/manager/poetry/extract.spec.ts
+++ b/lib/modules/manager/poetry/extract.spec.ts
@@ -156,12 +156,14 @@ describe('modules/manager/poetry/extract', () => {
           datasource: 'pypi',
           depName: 'dev_dep',
           depType: 'dev',
+          packageName: 'dev-dep',
         },
         {
           currentValue: '^4.0',
           datasource: 'pypi',
           depName: 'typing_dep',
           depType: 'typing',
+          packageName: 'typing-dep',
         },
       ]);
     });
diff --git a/lib/modules/manager/poetry/extract.ts b/lib/modules/manager/poetry/extract.ts
index aaf74be3aebb4e..535dc0208057a1 100644
--- a/lib/modules/manager/poetry/extract.ts
+++ b/lib/modules/manager/poetry/extract.ts
@@ -7,6 +7,7 @@ import {
   localPathExists,
   readLocalFile,
 } from '../../../util/fs';
+import { regEx } from '../../../util/regex';
 import { PypiDatasource } from '../../datasource/pypi';
 import * as pep440Versioning from '../../versioning/pep440';
 import * as poetryVersioning from '../../versioning/poetry';
@@ -54,6 +55,10 @@ function extractFromSection(
       continue;
     }
 
+    const pep503NormalizeRegex = regEx(/[-_.]+/g);
+    const packageName = depName
+      .toLowerCase()
+      .replace(pep503NormalizeRegex, '-');
     let skipReason: SkipReason | null = null;
     let currentValue = sectionContent[depName];
     let nestedVersion = false;
@@ -85,8 +90,11 @@ function extractFromSection(
       managerData: { nestedVersion },
       datasource: PypiDatasource.id,
     };
-    if (depName in poetryLockfile) {
-      dep.lockedVersion = poetryLockfile[depName];
+    if (packageName in poetryLockfile) {
+      dep.lockedVersion = poetryLockfile[packageName];
+    }
+    if (depName !== packageName) {
+      dep.packageName = packageName;
     }
     if (skipReason) {
       dep.skipReason = skipReason;