diff --git a/test/e2e/framework/addon/vault/setup.go b/test/e2e/framework/addon/vault/setup.go
index 6c37da816..8a2fa4ec4 100644
--- a/test/e2e/framework/addon/vault/setup.go
+++ b/test/e2e/framework/addon/vault/setup.go
@@ -299,7 +299,7 @@ func (v *VaultInitializer) mountPKI(mount, ttl string) error {
 func (v *VaultInitializer) generateRootCert() (string, error) {
 	params := map[string]string{
 		"common_name":          "Root CA",
-		"ttl":                  "2160h",
+		"ttl":                  "87600h",
 		"exclude_cn_from_sans": "true",
 		"key_type":             "ec",
 		"key_bits":             "256",
diff --git a/test/e2e/suite/conformance/certificatesigningrequests/vault/approle.go b/test/e2e/suite/conformance/certificatesigningrequests/vault/approle.go
index 5b247d639..ec5599af3 100644
--- a/test/e2e/suite/conformance/certificatesigningrequests/vault/approle.go
+++ b/test/e2e/suite/conformance/certificatesigningrequests/vault/approle.go
@@ -73,6 +73,7 @@ var _ = framework.ConformanceDescribe("CertificateSigningRequests", func() {
 		DeleteIssuerFunc: issuer.delete,
 		UnsupportedFeatures: featureset.NewFeatureSet(
 			featureset.KeyUsagesFeature,
+			featureset.Ed25519FeatureSet,
 		),
 	}).Define()
 
@@ -87,6 +88,7 @@ var _ = framework.ConformanceDescribe("CertificateSigningRequests", func() {
 		UnsupportedFeatures: featureset.NewFeatureSet(
 			featureset.SaveRootCAToSecret,
 			featureset.KeyUsagesFeature,
+			featureset.Ed25519FeatureSet,
 		),
 	}).Define()
 
@@ -100,6 +102,7 @@ var _ = framework.ConformanceDescribe("CertificateSigningRequests", func() {
 		DeleteIssuerFunc: clusterIssuer.delete,
 		UnsupportedFeatures: featureset.NewFeatureSet(
 			featureset.KeyUsagesFeature,
+			featureset.Ed25519FeatureSet,
 		),
 	}).Define()
 
@@ -114,6 +117,7 @@ var _ = framework.ConformanceDescribe("CertificateSigningRequests", func() {
 		UnsupportedFeatures: featureset.NewFeatureSet(
 			featureset.SaveRootCAToSecret,
 			featureset.KeyUsagesFeature,
+			featureset.Ed25519FeatureSet,
 		),
 	}).Define()
 })
diff --git a/test/e2e/suite/conformance/certificatesigningrequests/vault/approle_custom_mount.go b/test/e2e/suite/conformance/certificatesigningrequests/vault/approle_custom_mount.go
index 627a8c374..b02735326 100644
--- a/test/e2e/suite/conformance/certificatesigningrequests/vault/approle_custom_mount.go
+++ b/test/e2e/suite/conformance/certificatesigningrequests/vault/approle_custom_mount.go
@@ -33,6 +33,7 @@ var _ = framework.ConformanceDescribe("CertificateSigningRequests", func() {
 		DeleteIssuerFunc: issuer.delete,
 		UnsupportedFeatures: featureset.NewFeatureSet(
 			featureset.KeyUsagesFeature,
+			featureset.Ed25519FeatureSet,
 		),
 	}).Define()
 
@@ -47,6 +48,7 @@ var _ = framework.ConformanceDescribe("CertificateSigningRequests", func() {
 		UnsupportedFeatures: featureset.NewFeatureSet(
 			featureset.SaveRootCAToSecret,
 			featureset.KeyUsagesFeature,
+			featureset.Ed25519FeatureSet,
 		),
 	}).Define()
 
@@ -60,6 +62,7 @@ var _ = framework.ConformanceDescribe("CertificateSigningRequests", func() {
 		DeleteIssuerFunc: clusterIssuer.delete,
 		UnsupportedFeatures: featureset.NewFeatureSet(
 			featureset.KeyUsagesFeature,
+			featureset.Ed25519FeatureSet,
 		),
 	}).Define()
 
@@ -74,6 +77,7 @@ var _ = framework.ConformanceDescribe("CertificateSigningRequests", func() {
 		UnsupportedFeatures: featureset.NewFeatureSet(
 			featureset.SaveRootCAToSecret,
 			featureset.KeyUsagesFeature,
+			featureset.Ed25519FeatureSet,
 		),
 	}).Define()
 })
diff --git a/test/e2e/suite/conformance/certificatesigningrequests/vault/kubernetes.go b/test/e2e/suite/conformance/certificatesigningrequests/vault/kubernetes.go
index 214d3f0bc..cd8996b21 100644
--- a/test/e2e/suite/conformance/certificatesigningrequests/vault/kubernetes.go
+++ b/test/e2e/suite/conformance/certificatesigningrequests/vault/kubernetes.go
@@ -46,6 +46,7 @@ var _ = framework.ConformanceDescribe("CertificateSigningRequests", func() {
 		DeleteIssuerFunc: issuer.delete,
 		UnsupportedFeatures: featureset.NewFeatureSet(
 			featureset.KeyUsagesFeature,
+			featureset.Ed25519FeatureSet,
 		),
 	}).Define()
 
@@ -58,6 +59,7 @@ var _ = framework.ConformanceDescribe("CertificateSigningRequests", func() {
 		DeleteIssuerFunc: clusterIssuer.delete,
 		UnsupportedFeatures: featureset.NewFeatureSet(
 			featureset.KeyUsagesFeature,
+			featureset.Ed25519FeatureSet,
 		),
 	}).Define()
 })