diff --git a/backend/internal/certificate.js b/backend/internal/certificate.js
index 0828878bc7..bde1bdca49 100644
--- a/backend/internal/certificate.js
+++ b/backend/internal/certificate.js
@@ -798,6 +798,11 @@ const internalCertificate = {
 			certificate.domain_names.join(","),
 		];
 
+		// Add key-type parameter if specified
+		if (certificate.meta?.key_type) {
+			args.push("--key-type", certificate.meta.key_type);
+		}
+
 		const adds = internalCertificate.getAdditionalCertbotArgs(certificate.id);
 		args.push(...adds.args);
 
@@ -858,6 +863,11 @@ const internalCertificate = {
 			);
 		}
 
+		// Add key-type parameter if specified
+		if (certificate.meta?.key_type) {
+			args.push("--key-type", certificate.meta.key_type);
+		}
+
 		const adds = internalCertificate.getAdditionalCertbotArgs(certificate.id, certificate.meta.dns_provider);
 		args.push(...adds.args);
 
@@ -938,6 +948,11 @@ const internalCertificate = {
 			"--disable-hook-validation",
 		];
 
+		// Add key-type parameter if specified
+		if (certificate.meta?.key_type) {
+			args.push("--key-type", certificate.meta.key_type);
+		}
+
 		const adds = internalCertificate.getAdditionalCertbotArgs(certificate.id, certificate.meta.dns_provider);
 		args.push(...adds.args);
 
@@ -979,6 +994,11 @@ const internalCertificate = {
 			"--no-random-sleep-on-renew",
 		];
 
+		// Add key-type parameter if specified
+		if (certificate.meta?.key_type) {
+			args.push("--key-type", certificate.meta.key_type);
+		}
+
 		const adds = internalCertificate.getAdditionalCertbotArgs(certificate.id, certificate.meta.dns_provider);
 		args.push(...adds.args);
 
diff --git a/backend/schema/components/certificate-object.json b/backend/schema/components/certificate-object.json
index ef2d613fa6..80cd92befe 100644
--- a/backend/schema/components/certificate-object.json
+++ b/backend/schema/components/certificate-object.json
@@ -71,6 +71,11 @@
 				"propagation_seconds": {
 					"type": "integer",
 					"minimum": 0
+				},
+				"key_type": {
+					"type": "string",
+					"enum": ["rsa", "ecdsa"],
+					"default": "rsa"
 				}
 			},
 			"example": {
diff --git a/frontend/src/locale/src/bg.json b/frontend/src/locale/src/bg.json
index 81cab5982b..5183fe315b 100644
--- a/frontend/src/locale/src/bg.json
+++ b/frontend/src/locale/src/bg.json
@@ -170,6 +170,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "Тези домейни трябва вече да сочат към тази инсталация."
 	},
+	"certificates.key-type": {
+		"defaultMessage": "Тип ключ"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA е широко съвместим, ECDSA е по-бърз и по-сигурен, но може да не се поддържа от по-стари системи"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "с Let's Encrypt"
 	},
diff --git a/frontend/src/locale/src/de.json b/frontend/src/locale/src/de.json
index d36b259d46..ae97a29bff 100644
--- a/frontend/src/locale/src/de.json
+++ b/frontend/src/locale/src/de.json
@@ -155,6 +155,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "Diese Domänen müssen bereits so konfiguriert sein, dass sie auf diese Installation verweisen."
 	},
+	"certificates.key-type": {
+		"defaultMessage": "Schlüsseltyp"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA ist weit verbreitet, ECDSA ist schneller und sicherer, wird aber möglicherweise von älteren Systemen nicht unterstützt"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "Über Let's Encrypt"
 	},
diff --git a/frontend/src/locale/src/en.json b/frontend/src/locale/src/en.json
index 355d0db77b..efc7335fc5 100644
--- a/frontend/src/locale/src/en.json
+++ b/frontend/src/locale/src/en.json
@@ -170,6 +170,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "These domains must be already configured to point to this installation."
 	},
+	"certificates.key-type": {
+		"defaultMessage": "Key Type"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA is widely compatible, ECDSA is faster and more secure but may not be supported by older systems"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "with Let's Encrypt"
 	},
diff --git a/frontend/src/locale/src/es.json b/frontend/src/locale/src/es.json
index 2b1ebfa4e8..c8b1edb075 100644
--- a/frontend/src/locale/src/es.json
+++ b/frontend/src/locale/src/es.json
@@ -170,6 +170,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "Estos dominios ya deben estar configurados para apuntar a esta instalación."
 	},
+	"certificates.key-type": {
+		"defaultMessage": "Tipo de Clave"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA es ampliamente compatible, ECDSA es más rápido y seguro pero puede no ser compatible con sistemas antiguos"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "con Let's Encrypt"
 	},
diff --git a/frontend/src/locale/src/it.json b/frontend/src/locale/src/it.json
index 3301218f9e..3bbc731650 100644
--- a/frontend/src/locale/src/it.json
+++ b/frontend/src/locale/src/it.json
@@ -155,6 +155,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "Questi domini devono già essere configurati per puntare a questa installazione."
 	},
+	"certificates.key-type": {
+		"defaultMessage": "Tipo di Chiave"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA è ampiamente compatibile, ECDSA è più veloce e sicuro ma potrebbe non essere supportato da sistemi più vecchi"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "con Let's Encrypt"
 	},
diff --git a/frontend/src/locale/src/ja.json b/frontend/src/locale/src/ja.json
index 1ace1c642d..2ffadd0cf8 100644
--- a/frontend/src/locale/src/ja.json
+++ b/frontend/src/locale/src/ja.json
@@ -155,6 +155,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "これらのドメインは、すでにこのインストール先を指すように設定されている必要がありますあ."
 	},
+	"certificates.key-type": {
+		"defaultMessage": "鍵タイプ"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSAは広く互換性があり、ECDSAはより高速で安全ですが、古いシステムではサポートされていない場合があります"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "Let's Encryptを使用する"
 	},
diff --git a/frontend/src/locale/src/ko.json b/frontend/src/locale/src/ko.json
index f9d82d85b5..9c0093591b 100644
--- a/frontend/src/locale/src/ko.json
+++ b/frontend/src/locale/src/ko.json
@@ -170,6 +170,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "도메인이 이 서버를 가리키도록 설정되어 있어야 합니다."
 	},
+	"certificates.key-type": {
+		"defaultMessage": "키 유형"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA는 호환성이 넓고, ECDSA는 더 빠르고 안전하지만 오래된 시스템에서 지원되지 않을 수 있습니다"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "Let's Encrypt 사용"
 	},
@@ -218,7 +230,7 @@
 	"column.provider": {
 		"defaultMessage": "공급자"
 	},
-	"column.roles": { 
+	"column.roles": {
 		"defaultMessage": "권한"
 	},
 	"column.rules": {
diff --git a/frontend/src/locale/src/nl.json b/frontend/src/locale/src/nl.json
index 2732f5e4df..91e71df7c5 100644
--- a/frontend/src/locale/src/nl.json
+++ b/frontend/src/locale/src/nl.json
@@ -155,6 +155,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "Deze domeinen moeten al worden geconfigureerd om naar deze installatie te wijzen."
 	},
+	"certificates.key-type": {
+		"defaultMessage": "Sleuteltype"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA is breed compatibel, ECDSA is sneller en veiliger maar wordt mogelijk niet ondersteund door oudere systemen"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "met Let's Encrypt"
 	},
diff --git a/frontend/src/locale/src/pl.json b/frontend/src/locale/src/pl.json
index 9853c7bc49..faaebc5e6b 100644
--- a/frontend/src/locale/src/pl.json
+++ b/frontend/src/locale/src/pl.json
@@ -155,6 +155,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "Te domeny muszą być już skonfigurowane tak, aby wskazywały na ten serwer www"
 	},
+	"certificates.key-type": {
+		"defaultMessage": "Typ klucza"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA jest szeroko kompatybilny, ECDSA jest szybszy i bezpieczniejszy, ale może nie być obsługiwany przez starsze systemy"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "z Let's Encrypt"
 	},
diff --git a/frontend/src/locale/src/ru.json b/frontend/src/locale/src/ru.json
index dedcd51397..44dff1294c 100644
--- a/frontend/src/locale/src/ru.json
+++ b/frontend/src/locale/src/ru.json
@@ -155,6 +155,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "Эти домены должны быть настроены и указывать на этот экземпляр."
 	},
+	"certificates.key-type": {
+		"defaultMessage": "Тип ключа"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA широко совместим, ECDSA быстрее и безопаснее, но может не поддерживаться старыми системами"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "через Let's Encrypt"
 	},
diff --git a/frontend/src/locale/src/sk.json b/frontend/src/locale/src/sk.json
index d006e5556c..6431643fc0 100644
--- a/frontend/src/locale/src/sk.json
+++ b/frontend/src/locale/src/sk.json
@@ -155,6 +155,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "Tieto domény musia byť už nakonfigurované tak, aby smerovali na túto inštaláciu."
 	},
+	"certificates.key-type": {
+		"defaultMessage": "Typ kľúča"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA je široko kompatibilný, ECDSA je rýchlejší a bezpečnejší, ale nemusí byť podporovaný staršími systémami"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "pomocou Let's Encrypt"
 	},
diff --git a/frontend/src/locale/src/vi.json b/frontend/src/locale/src/vi.json
index fc1ed85b2b..32d26d5590 100644
--- a/frontend/src/locale/src/vi.json
+++ b/frontend/src/locale/src/vi.json
@@ -155,6 +155,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "Các miền này phải được cấu hình sẵn để trỏ đến cài đặt này."
 	},
+	"certificates.key-type": {
+		"defaultMessage": "Loại khóa"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA tương thích rộng rãi, ECDSA nhanh hơn và an toàn hơn nhưng có thể không được hỗ trợ bởi các hệ thống cũ"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "bằng Let's Encrypt"
 	},
diff --git a/frontend/src/locale/src/zh.json b/frontend/src/locale/src/zh.json
index 541093a660..d40ea39d6d 100755
--- a/frontend/src/locale/src/zh.json
+++ b/frontend/src/locale/src/zh.json
@@ -155,6 +155,18 @@
 	"certificates.http.warning": {
 		"defaultMessage": "这些域名必须配置为指向本设备。"
 	},
+	"certificates.key-type": {
+		"defaultMessage": "密钥类型"
+	},
+	"certificates.key-type-description": {
+		"defaultMessage": "RSA 兼容性更好，ECDSA 更快更安全但旧系统可能不支持"
+	},
+	"certificates.key-type-ecdsa": {
+		"defaultMessage": "ECDSA 256"
+	},
+	"certificates.key-type-rsa": {
+		"defaultMessage": "RSA 2048"
+	},
 	"certificates.request.subtitle": {
 		"defaultMessage": "使用 Let's Encrypt"
 	},
diff --git a/frontend/src/modals/DNSCertificateModal.tsx b/frontend/src/modals/DNSCertificateModal.tsx
index 3c97fddd42..f062e24dea 100644
--- a/frontend/src/modals/DNSCertificateModal.tsx
+++ b/frontend/src/modals/DNSCertificateModal.tsx
@@ -1,6 +1,6 @@
 import { useQueryClient } from "@tanstack/react-query";
 import EasyModal, { type InnerModalProps } from "ez-modal-react";
-import { Form, Formik } from "formik";
+import { Form, Formik, Field } from "formik";
 import { type ReactNode, useState } from "react";
 import { Alert } from "react-bootstrap";
 import Modal from "react-bootstrap/Modal";
@@ -44,6 +44,7 @@ const DNSCertificateModal = EasyModal.create(({ visible, remove }: InnerModalPro
 						provider: "letsencrypt",
 						meta: {
 							dnsChallenge: true,
+							keyType: "ecdsa",
 						},
 					} as any
 				}
@@ -63,6 +64,30 @@ const DNSCertificateModal = EasyModal.create(({ visible, remove }: InnerModalPro
 							<div className="card m-0 border-0">
 								<div className="card-body">
 									<DomainNamesField isWildcardPermitted dnsProviderWildcardSupported />
+									<Field name="meta.keyType">
+										{({ field }: any) => (
+											<div className="mb-3">
+												<label htmlFor="keyType" className="form-label">
+													<T id="certificates.key-type" />
+												</label>
+												<select
+													id="keyType"
+													className="form-select"
+													{...field}
+												>
+													<option value="rsa">
+														<T id="certificates.key-type-rsa" />
+													</option>
+													<option value="ecdsa">
+														<T id="certificates.key-type-ecdsa" />
+													</option>
+												</select>
+												<small className="form-text text-muted">
+													<T id="certificates.key-type-description" />
+												</small>
+											</div>
+										)}
+									</Field>
 									<DNSProviderFields />
 								</div>
 							</div>
diff --git a/frontend/src/modals/HTTPCertificateModal.tsx b/frontend/src/modals/HTTPCertificateModal.tsx
index b996a7d6a3..a06df2c62d 100644
--- a/frontend/src/modals/HTTPCertificateModal.tsx
+++ b/frontend/src/modals/HTTPCertificateModal.tsx
@@ -1,7 +1,7 @@
 import { IconAlertTriangle } from "@tabler/icons-react";
 import { useQueryClient } from "@tanstack/react-query";
 import EasyModal, { type InnerModalProps } from "ez-modal-react";
-import { Form, Formik } from "formik";
+import { Form, Formik, Field } from "formik";
 import { type ReactNode, useState } from "react";
 import { Alert } from "react-bootstrap";
 import Modal from "react-bootstrap/Modal";
@@ -115,6 +115,9 @@ const HTTPCertificateModal = EasyModal.create(({ visible, remove }: InnerModalPr
 					{
 						domainNames: [],
 						provider: "letsencrypt",
+						meta: {
+							keyType: "ecdsa",
+						},
 					} as any
 				}
 				onSubmit={onSubmit}
@@ -142,6 +145,30 @@ const HTTPCertificateModal = EasyModal.create(({ visible, remove }: InnerModalPr
 											setTestResults(null);
 										}}
 									/>
+									<Field name="meta.keyType">
+										{({ field }: any) => (
+											<div className="mb-3">
+												<label htmlFor="keyType" className="form-label">
+													<T id="certificates.key-type" />
+												</label>
+												<select
+													id="keyType"
+													className="form-select"
+													{...field}
+												>
+													<option value="rsa">
+														<T id="certificates.key-type-rsa" />
+													</option>
+													<option value="ecdsa">
+														<T id="certificates.key-type-ecdsa" />
+													</option>
+												</select>
+												<small className="form-text text-muted">
+													<T id="certificates.key-type-description" />
+												</small>
+											</div>
+										)}
+									</Field>
 								</div>
 								{testResults ? (
 									<div className="card-footer">