diff --git a/roles/koschei/backend/files/systemd-memory-limit.conf b/roles/koschei/backend/files/systemd-memory-limit.conf
new file mode 100644
index 0000000000..49d11d08e4
--- /dev/null
+++ b/roles/koschei/backend/files/systemd-memory-limit.conf
@@ -0,0 +1,2 @@
+[Service]
+MemoryLimit=3G
diff --git a/roles/koschei/backend/tasks/main.yml b/roles/koschei/backend/tasks/main.yml
index 2b0fc36a85..b32d06c85e 100644
--- a/roles/koschei/backend/tasks/main.yml
+++ b/roles/koschei/backend/tasks/main.yml
@@ -25,6 +25,18 @@
   - config
   - service
 
+- name: install systemd config files
+  copy: >
+    src=systemd-memory-limit.conf
+    dest=/etc/systemd/system/koschei-resolver.service.d/memory-limit.conf
+  notify:
+  - reload systemd
+  - restart koschei-resolver
+  tags:
+  - koschei
+  - config
+  - service
+
 - name: install config files
   template: >
     src="{{ item }}.j2"