diff --git a/internal/applicant/httpreq.go b/internal/applicant/httpreq.go
index ebe3fb10..7972b7ae 100644
--- a/internal/applicant/httpreq.go
+++ b/internal/applicant/httpreq.go
@@ -28,7 +28,7 @@ func (a *httpReq) Apply() (*Certificate, error) {
 	os.Setenv("HTTPREQ_MODE", access.Mode)
 	os.Setenv("HTTPREQ_USERNAME", access.Username)
 	os.Setenv("HTTPREQ_PASSWORD", access.Password)
-	os.Setenv("HTTPREQ_HTTP_TIMEOUT", fmt.Sprintf("%d", a.option.Timeout))
+	os.Setenv("HTTPREQ_PROPAGATION_TIMEOUT", fmt.Sprintf("%d", a.option.Timeout))
 	dnsProvider, err := httpreq.NewDNSProvider()
 	if err != nil {
 		return nil, err
diff --git a/internal/applicant/pdns.go b/internal/applicant/pdns.go
index 625a00ff..2c84c85e 100644
--- a/internal/applicant/pdns.go
+++ b/internal/applicant/pdns.go
@@ -26,7 +26,7 @@ func (a *powerdns) Apply() (*Certificate, error) {
 
 	os.Setenv("PDNS_API_URL", access.ApiUrl)
 	os.Setenv("PDNS_API_KEY", access.ApiKey)
-	os.Setenv("PDNS_HTTP_TIMEOUT", fmt.Sprintf("%d", a.option.Timeout))
+	os.Setenv("PDNS_PROPAGATION_TIMEOUT", fmt.Sprintf("%d", a.option.Timeout))
 	dnsProvider, err := pdns.NewDNSProvider()
 	if err != nil {
 		return nil, err