diff --git a/manager/src/backend/internal/ssl.js b/manager/src/backend/internal/ssl.js
index 9746c58..b9f42be 100644
--- a/manager/src/backend/internal/ssl.js
+++ b/manager/src/backend/internal/ssl.js
@@ -26,7 +26,7 @@ const internalSsl = {
     processExpiringHosts: () => {
         if (!internalSsl.interval_processing) {
             logger.info('Renewing SSL certs close to expiry...');
-            return utils.exec('/usr/bin/letsencrypt renew')
+            return utils.exec('/usr/bin/certbot renew --webroot=/config/letsencrypt-acme-challenge')
                 .then(result => {
                     logger.info(result);
                     internalSsl.interval_processing = false;
@@ -55,7 +55,7 @@ const internalSsl = {
     requestSsl: host => {
         logger.info('Requesting SSL certificates for ' + host.hostname);
 
-        return utils.exec('/usr/bin/letsencrypt certonly --agree-tos --email "' + host.letsencrypt_email + '" -n -a webroot --webroot-path=' + host.root_path + ' -d "' + host.hostname + '"')
+        return utils.exec('/usr/bin/letsencrypt certonly --agree-tos --email "' + host.letsencrypt_email + '" -n -a webroot --webroot-path=/config/letsencrypt-acme-challenge -d "' + host.hostname + '"')
             .then(result => {
                 logger.info(result);
                 return result;
@@ -69,7 +69,7 @@ const internalSsl = {
     renewSsl: host => {
         logger.info('Renewing SSL certificates for ' + host.hostname);
 
-        return utils.exec('/usr/bin/letsencrypt renew --force-renewal --disable-hook-validation --cert-name "' + host.hostname + '"')
+        return utils.exec('/usr/bin/certbot renew --force-renewal --disable-hook-validation --webroot-path=/config/letsencrypt-acme-challenge --cert-name "' + host.hostname + '"')
             .then(result => {
                 logger.info(result);
                 return result;
@@ -83,7 +83,7 @@ const internalSsl = {
     deleteCerts: host => {
         logger.info('Deleting SSL certificates for ' + host.hostname);
 
-        return utils.exec('/usr/bin/letsencrypt delete -n --cert-name "' + host.hostname + '"')
+        return utils.exec('/usr/bin/certbot delete -n --cert-name "' + host.hostname + '"')
             .then(result => {
                 logger.info(result);
             })
@@ -101,20 +101,17 @@ const internalSsl = {
         let filename      = internalNginx.getConfigName(host);
         let template_data = host;
 
-        template_data.root_path = '/tmp/' + host.hostname;
+        return new Promise((resolve, reject) => {
+            try {
+                template        = fs.readFileSync(__dirname + '/../templates/letsencrypt.conf.ejs', {encoding: 'utf8'});
+                let config_text = ejs.render(template, template_data);
+                fs.writeFileSync(filename, config_text, {encoding: 'utf8'});
 
-        return utils.exec('mkdir -p ' + template_data.root_path)
-            .then(() => {
-                try {
-                    template        = fs.readFileSync(__dirname + '/../templates/letsencrypt.conf.ejs', {encoding: 'utf8'});
-                    let config_text = ejs.render(template, template_data);
-                    fs.writeFileSync(filename, config_text, {encoding: 'utf8'});
-
-                    return template_data;
-                } catch (err) {
-                    throw new error.ConfigurationError(err.message);
-                }
-            });
+                resolve(template_data);
+            } catch (err) {
+                reject(new error.ConfigurationError(err.message));
+            }
+        });
     },
 
     /**
diff --git a/manager/src/backend/templates/letsencrypt.conf.ejs b/manager/src/backend/templates/letsencrypt.conf.ejs
index c2ca6a2..f870f2e 100644
--- a/manager/src/backend/templates/letsencrypt.conf.ejs
+++ b/manager/src/backend/templates/letsencrypt.conf.ejs
@@ -6,6 +6,6 @@ server {
   access_log /config/logs/letsencrypt.log proxy;
 
   location / {
-    root <%- root_path %>;
+    root /config/letsencrypt-acme-challenge;
   }
 }
diff --git a/manager/src/backend/templates/proxy.conf.ejs b/manager/src/backend/templates/proxy.conf.ejs
index f50e147..ae328ad 100644
--- a/manager/src/backend/templates/proxy.conf.ejs
+++ b/manager/src/backend/templates/proxy.conf.ejs
@@ -14,6 +14,7 @@ server {
   <%- typeof block_exploits !== 'undefined' && block_exploits ? 'include conf.d/include/block-exploits.conf;' : '' %>
 
 <% if (typeof ssl !== 'undefined' && ssl) { -%>
+  include conf.d/include/letsencrypt-acme-challenge.conf;
   include conf.d/include/ssl-ciphers.conf;
   ssl_certificate /etc/letsencrypt/live/<%- hostname %>/fullchain.pem;
   ssl_certificate_key /etc/letsencrypt/live/<%- hostname %>/privkey.pem;
diff --git a/rootfs/etc/nginx/conf.d/include/letsencrypt-acme-challenge.conf b/rootfs/etc/nginx/conf.d/include/letsencrypt-acme-challenge.conf
new file mode 100644
index 0000000..cd91d3f
--- /dev/null
+++ b/rootfs/etc/nginx/conf.d/include/letsencrypt-acme-challenge.conf
@@ -0,0 +1,25 @@
+# Rule for legitimate ACME Challenge requests (like /.well-known/acme-challenge/xxxxxxxxx)
+# We use ^~ here, so that we don't check other regexes (for speed-up). We actually MUST cancel
+# other regex checks, because in our other config files have regex rule that denies access to files with dotted names.
+location ^~ /.well-known/acme-challenge/ {
+
+    # Set correct content type. According to this:
+    # https://community.letsencrypt.org/t/using-the-webroot-domain-verification-method/1445/29
+    # Current specification requires "text/plain" or no content header at all.
+    # It seems that "text/plain" is a safe option.
+    default_type "text/plain";
+
+    # This directory must be the same as in /etc/letsencrypt/cli.ini
+    # as "webroot-path" parameter. Also don't forget to set "authenticator" parameter
+    # there to "webroot".
+    # Do NOT use alias, use root! Target directory is located here:
+    # /var/www/common/letsencrypt/.well-known/acme-challenge/
+    root         /config/letsencrypt-acme-challenge;
+}
+
+# Hide /acme-challenge subdirectory and return 404 on all requests.
+# It is somewhat more secure than letting Nginx return 403.
+# Ending slash is important!
+location = /.well-known/acme-challenge/ {
+    return 404;
+}
diff --git a/rootfs/etc/services.d/manager/run b/rootfs/etc/services.d/manager/run
index ec6601c..a6f6632 100755
--- a/rootfs/etc/services.d/manager/run
+++ b/rootfs/etc/services.d/manager/run
@@ -1,4 +1,6 @@
 #!/usr/bin/with-contenv bash
 
+mkdir -p /config/letsencrypt-acme-challenge
+
 cd /srv/manager
 node --abort_on_uncaught_exception --max_old_space_size=250 /srv/manager/src/backend/index.js
diff --git a/rootfs/root/.config/letsencrypt/cli.ini b/rootfs/root/.config/letsencrypt/cli.ini
new file mode 100644
index 0000000..561b770
--- /dev/null
+++ b/rootfs/root/.config/letsencrypt/cli.ini
@@ -0,0 +1,4 @@
+text = True
+non-interactive = True
+authenticator = webroot
+webroot-path = /config/letsencrypt-acme-challenge