diff --git a/package-lock.json b/package-lock.json
index 0052dbc..5d5ecd2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -39,8 +39,7 @@
         "swagger-ui-express": "^4.6.1",
         "sybase": "^1.2.3",
         "typeorm": "^0.3.12",
-        "uuid": "^9.0.1",
-        "xlsx": "^0.18.5"
+        "uuid": "^9.0.1"
       },
       "devDependencies": {
         "@jridgewell/sourcemap-codec": "^1.4.14",
@@ -2878,14 +2877,6 @@
         "node": ">=0.4.0"
       }
     },
-    "node_modules/adler-32": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/adler-32/-/adler-32-1.3.1.tgz",
-      "integrity": "sha512-ynZ4w/nUUv5rrsR8UUGoe1VC9hZj6V5hU9Qw1HlMDJGEJw5S7TfTErWTjMys6M7vr0YWcPqs3qAr4ss0nDfP+A==",
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/agent-base": {
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
@@ -3849,18 +3840,6 @@
       ],
       "license": "CC-BY-4.0"
     },
-    "node_modules/cfb": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/cfb/-/cfb-1.2.2.tgz",
-      "integrity": "sha512-KfdUZsSOw19/ObEWasvBP/Ac4reZvAGauZhs6S/gqNhXhI7cKwvlH7ulj+dOEYnca4bm4SGo8C1bTAQvnTjgQA==",
-      "dependencies": {
-        "adler-32": "~1.3.0",
-        "crc-32": "~1.2.0"
-      },
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/chainsaw": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/chainsaw/-/chainsaw-0.1.0.tgz",
@@ -4068,14 +4047,6 @@
         "node": ">= 0.12.0"
       }
     },
-    "node_modules/codepage": {
-      "version": "1.15.0",
-      "resolved": "https://registry.npmjs.org/codepage/-/codepage-1.15.0.tgz",
-      "integrity": "sha512-3g6NUTPd/YtuuGrhMnOMRjFc+LJw/bnMp3+0r/Wcz3IXUuCosKRJvMphm5+Q+bvTVGcJJuRvVLuYba+WojaFaA==",
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/collect-v8-coverage": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/collect-v8-coverage/-/collect-v8-coverage-1.0.3.tgz",
@@ -5966,14 +5937,6 @@
         "node": ">= 0.6"
       }
     },
-    "node_modules/frac": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/frac/-/frac-1.1.2.tgz",
-      "integrity": "sha512-w/XBfkibaTl3YDqASwfDUqkna4Z2p9cFSr1aHDt0WoMTECnRfBOv2WArlZILlqgWlmdIlALXGpM2AOhEk5W3IA==",
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/fresh": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/fresh/-/fresh-2.0.0.tgz",
@@ -10284,17 +10247,6 @@
         "node": ">=14"
       }
     },
-    "node_modules/ssf": {
-      "version": "0.11.2",
-      "resolved": "https://registry.npmjs.org/ssf/-/ssf-0.11.2.tgz",
-      "integrity": "sha512-+idbmIXoYET47hH+d7dfm2epdOMUDjqcB4648sTZ+t2JwoyBFL/insLfB/racrDmsKB3diwsDA696pZMieAC5g==",
-      "dependencies": {
-        "frac": "~1.1.2"
-      },
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/stack-utils": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/stack-utils/-/stack-utils-2.0.6.tgz",
@@ -12092,22 +12044,6 @@
         "node": ">=8.12.0"
       }
     },
-    "node_modules/wmf": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wmf/-/wmf-1.0.2.tgz",
-      "integrity": "sha512-/p9K7bEh0Dj6WbXg4JG0xvLQmIadrner1bi45VMJTfnbVHsc7yIajZyoSoK60/dtVBs12Fm6WkUI5/3WAVsNMw==",
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
-    "node_modules/word": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/word/-/word-0.3.0.tgz",
-      "integrity": "sha512-OELeY0Q61OXpdUfTp+oweA/vtLVg5VDOXh+3he3PNzLGG/y0oylSOC1xRVj0+l4vQ3tj/bB1HVHv1ocXkQceFA==",
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/word-wrap": {
       "version": "1.2.5",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
@@ -12176,26 +12112,6 @@
         "node": "^12.13.0 || ^14.15.0 || >=16.0.0"
       }
     },
-    "node_modules/xlsx": {
-      "version": "0.18.5",
-      "resolved": "https://registry.npmjs.org/xlsx/-/xlsx-0.18.5.tgz",
-      "integrity": "sha512-dmg3LCjBPHZnQp5/F/+nnTa+miPJxUXB6vtk42YjBBKayDNagxGEeIdWApkYPOf3Z3pm3k62Knjzp7lMeTEtFQ==",
-      "dependencies": {
-        "adler-32": "~1.3.0",
-        "cfb": "~1.2.1",
-        "codepage": "~1.15.0",
-        "crc-32": "~1.2.1",
-        "ssf": "~0.11.2",
-        "wmf": "~1.0.1",
-        "word": "~0.3.0"
-      },
-      "bin": {
-        "xlsx": "bin/xlsx.njs"
-      },
-      "engines": {
-        "node": ">=0.8"
-      }
-    },
     "node_modules/xmlchars": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
@@ -14403,11 +14319,6 @@
       "integrity": "sha512-k+iyHEuPgSw6SbuDpGQM+06HQUa04DZ3o+F6CSzXMvvI5KMvnaEqXe+YVe555R9nn6GPt404fos4wcgpw12SDA==",
       "devOptional": true
     },
-    "adler-32": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/adler-32/-/adler-32-1.3.1.tgz",
-      "integrity": "sha512-ynZ4w/nUUv5rrsR8UUGoe1VC9hZj6V5hU9Qw1HlMDJGEJw5S7TfTErWTjMys6M7vr0YWcPqs3qAr4ss0nDfP+A=="
-    },
     "agent-base": {
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
@@ -15072,15 +14983,6 @@
       "integrity": "sha512-72Cuvd95zbSYPKq6Fhg8eDJRlzgWDf7/mtoZv6Qe/DYNCEBdNxoA3+rZAU2ZhGCpZlns3EssFavaZomckT5Uuw==",
       "dev": true
     },
-    "cfb": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/cfb/-/cfb-1.2.2.tgz",
-      "integrity": "sha512-KfdUZsSOw19/ObEWasvBP/Ac4reZvAGauZhs6S/gqNhXhI7cKwvlH7ulj+dOEYnca4bm4SGo8C1bTAQvnTjgQA==",
-      "requires": {
-        "adler-32": "~1.3.0",
-        "crc-32": "~1.2.0"
-      }
-    },
     "chainsaw": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/chainsaw/-/chainsaw-0.1.0.tgz",
@@ -15218,11 +15120,6 @@
       "integrity": "sha512-QVb0dM5HvG+uaxitm8wONl7jltx8dqhfU33DcqtOZcLSVIKSDDLDi7+0LbAKiyI8hD9u42m2YxXSkMGWThaecQ==",
       "dev": true
     },
-    "codepage": {
-      "version": "1.15.0",
-      "resolved": "https://registry.npmjs.org/codepage/-/codepage-1.15.0.tgz",
-      "integrity": "sha512-3g6NUTPd/YtuuGrhMnOMRjFc+LJw/bnMp3+0r/Wcz3IXUuCosKRJvMphm5+Q+bvTVGcJJuRvVLuYba+WojaFaA=="
-    },
     "collect-v8-coverage": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/collect-v8-coverage/-/collect-v8-coverage-1.0.3.tgz",
@@ -16616,11 +16513,6 @@
       "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.2.0.tgz",
       "integrity": "sha512-buRG0fpBtRHSTCOASe6hD258tEubFoRLb4ZNA6NxMVHNw2gOcwHo9wyablzMzOA5z9xA9L1KNjk/Nt6MT9aYow=="
     },
-    "frac": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/frac/-/frac-1.1.2.tgz",
-      "integrity": "sha512-w/XBfkibaTl3YDqASwfDUqkna4Z2p9cFSr1aHDt0WoMTECnRfBOv2WArlZILlqgWlmdIlALXGpM2AOhEk5W3IA=="
-    },
     "fresh": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/fresh/-/fresh-2.0.0.tgz",
@@ -19677,14 +19569,6 @@
       "resolved": "https://registry.npmjs.org/sql-highlight/-/sql-highlight-6.1.0.tgz",
       "integrity": "sha512-ed7OK4e9ywpE7pgRMkMQmZDPKSVdm0oX5IEtZiKnFucSF0zu6c80GZBe38UqHuVhTWJ9xsKgSMjCG2bml86KvA=="
     },
-    "ssf": {
-      "version": "0.11.2",
-      "resolved": "https://registry.npmjs.org/ssf/-/ssf-0.11.2.tgz",
-      "integrity": "sha512-+idbmIXoYET47hH+d7dfm2epdOMUDjqcB4648sTZ+t2JwoyBFL/insLfB/racrDmsKB3diwsDA696pZMieAC5g==",
-      "requires": {
-        "frac": "~1.1.2"
-      }
-    },
     "stack-utils": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/stack-utils/-/stack-utils-2.0.6.tgz",
@@ -20864,16 +20748,6 @@
         }
       }
     },
-    "wmf": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wmf/-/wmf-1.0.2.tgz",
-      "integrity": "sha512-/p9K7bEh0Dj6WbXg4JG0xvLQmIadrner1bi45VMJTfnbVHsc7yIajZyoSoK60/dtVBs12Fm6WkUI5/3WAVsNMw=="
-    },
-    "word": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/word/-/word-0.3.0.tgz",
-      "integrity": "sha512-OELeY0Q61OXpdUfTp+oweA/vtLVg5VDOXh+3he3PNzLGG/y0oylSOC1xRVj0+l4vQ3tj/bB1HVHv1ocXkQceFA=="
-    },
     "word-wrap": {
       "version": "1.2.5",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
@@ -20921,20 +20795,6 @@
         "signal-exit": "^3.0.7"
       }
     },
-    "xlsx": {
-      "version": "0.18.5",
-      "resolved": "https://registry.npmjs.org/xlsx/-/xlsx-0.18.5.tgz",
-      "integrity": "sha512-dmg3LCjBPHZnQp5/F/+nnTa+miPJxUXB6vtk42YjBBKayDNagxGEeIdWApkYPOf3Z3pm3k62Knjzp7lMeTEtFQ==",
-      "requires": {
-        "adler-32": "~1.3.0",
-        "cfb": "~1.2.1",
-        "codepage": "~1.15.0",
-        "crc-32": "~1.2.1",
-        "ssf": "~0.11.2",
-        "wmf": "~1.0.1",
-        "word": "~0.3.0"
-      }
-    },
     "xmlchars": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
diff --git a/package.json b/package.json
index 40d3684..b3b0ba8 100644
--- a/package.json
+++ b/package.json
@@ -50,8 +50,7 @@
     "swagger-ui-express": "^4.6.1",
     "sybase": "^1.2.3",
     "typeorm": "^0.3.12",
-    "uuid": "^9.0.1",
-    "xlsx": "^0.18.5"
+    "uuid": "^9.0.1"
   },
   "devDependencies": {
     "@jridgewell/sourcemap-codec": "^1.4.14",
diff --git a/src/email/email.controller.ts b/src/email/email.controller.ts
index 50fb946..5e80b97 100644
--- a/src/email/email.controller.ts
+++ b/src/email/email.controller.ts
@@ -16,7 +16,6 @@ import { FileInterceptor } from '@nestjs/platform-express';
 import { EmailDto } from './dto/emailDto.dto';
 import { EmailService } from './email.service';
 import { Response } from 'express';
-import * as xlsx from 'xlsx';
 import { AuthGuard } from '@nestjs/passport';
 
 @Controller('email')
diff --git a/src/email/email.service.ts b/src/email/email.service.ts
index ab65008..ecb236e 100644
--- a/src/email/email.service.ts
+++ b/src/email/email.service.ts
@@ -13,7 +13,6 @@ import { EventosService } from 'src/eventos/eventos.service';
 import { Participante } from 'src/participante/participante.entity';
 import { Repository } from 'typeorm';
 import { EmailDto } from './dto/emailDto.dto';
-import * as xlsx from 'xlsx';
 import * as pdfMake from 'pdfmake/build/pdfmake';
 import * as pdfFonts from 'pdfmake/build/vfs_fonts';
 /* import * as PDFDocument from 'pdfkit'; */
@@ -127,9 +126,25 @@ export class EmailService {
     //traemos la info del evento
     const evento = await this.eventoService.getEventosPorId(id_evento);
 
-    const workbook = xlsx.read(file.buffer);
-    const worksheet = workbook.Sheets[workbook.SheetNames[0]];
-    const data = xlsx.utils.sheet_to_json(worksheet);
+    const workbook = new ExcelJS.Workbook();
+    await workbook.xlsx.load(file.buffer);
+    const worksheet = workbook.worksheets[0];
+
+    const data: any[] = [];
+    let headers: string[] = [];
+    worksheet.eachRow((row, rowNumber) => {
+      const rowData: any = {};
+      row.eachCell({ includeEmpty: true }, (cell, colNumber) => {
+        if (rowNumber === 1) {
+          headers[colNumber] = String(cell.value).trim();
+        } else {
+          rowData[headers[colNumber]] = cell.value;
+        }
+      });
+      if (rowNumber > 1) {
+        data.push(rowData);
+      }
+    });
 
     // Carga el PDF pre-diseñado
     const existingPdfBytes = fs.readFileSync('src/email/DisenoConstancia.pdf');