diff --git a/ansible-scylla-node/defaults/main.yml b/ansible-scylla-node/defaults/main.yml
index b5accce2..82940f8c 100644
--- a/ansible-scylla-node/defaults/main.yml
+++ b/ansible-scylla-node/defaults/main.yml
@@ -103,13 +103,15 @@ firewall_enabled: false
 
 # URL of an RPM .repo file or a DEB .list file
 # deprecated in favour of below, it will be dropped soon, below should be used
-scylla_repos:
-  - http://downloads.scylladb.com/rpm/centos/scylla-2021.1.repo
-
-scylla_deb_repos:
-  - http://downloads.scylladb.com/deb/ubuntu/scylla-2021.1.list
-
-scylla_rpm_repos: "{{ scylla_repos }}"
+#scylla_repos:
+#  - http://downloads.scylladb.com/rpm/centos/scylla-2021.1.repo
+#
+# Both scylla_deb_repos and scylla_rpm_repos, if undefined, would resolve to a URL that corresponds
+# to a scylla version to which scylla_version resolves to.
+#scylla_deb_repos:
+#  - http://downloads.scylladb.com/deb/ubuntu/scylla-2021.1.list
+#
+#scylla_rpm_repos: "{{ scylla_repos }}"
 
 # Use a newer kernel from ELRepo (was recommended for RHEL/CentOS until 5.11)
 # Reboot after the elrepo kernel has been installed is recommended as well.
diff --git a/ansible-scylla-node/tasks/main.yml b/ansible-scylla-node/tasks/main.yml
index 9dc42e57..036e7a7d 100644
--- a/ansible-scylla-node/tasks/main.yml
+++ b/ansible-scylla-node/tasks/main.yml
@@ -54,6 +54,9 @@
     msg: "Latest Scylla version can only be installed with an 'online' installation"
   when: scylla_version == 'latest' and install_type != 'online'
 
+- name: Set a repository URL if not explicitly set
+  include_tasks: set_default_repo.yml
+
 # Upgrade
 - name: Upgrade Scylla
   include_tasks: upgrade/main.yml
diff --git a/ansible-scylla-node/tasks/set_default_repo.yml b/ansible-scylla-node/tasks/set_default_repo.yml
new file mode 100644
index 00000000..e0b6ea8f
--- /dev/null
+++ b/ansible-scylla-node/tasks/set_default_repo.yml
@@ -0,0 +1,32 @@
+---
+- name: Split {{ scylla_version_to_install }}
+  set_fact:
+    _split_version: "{{ scylla_version_to_install.split('.') }}"
+
+- name: Check that {{ scylla_version_to_install }} has a valid format
+  fail:
+    msg: "scylla_version resolved to {{ scylla_version_to_install }} and it can't be used with undefined scylla_deb_repos. See README.md for more details."
+  when: (_split_version|length < 2)
+
+- name: Set default repository for a Debian host
+  block:
+    - name: Set temporary fact
+      set_fact:
+        _scylla_repo_default: "http://downloads.scylladb.com/deb/ubuntu/scylla-{{ _split_version[0] }}.{{ _split_version[1] }}.list"
+
+    - name: Set scylla_deb_repos
+      set_fact:
+        scylla_deb_repos: [ "{{ _scylla_repo_default }}" ]
+  when: ansible_os_family|lower == 'debian' and scylla_deb_repos is not defined
+
+- name: Set default repository for a RedHat host
+  block:
+    - name: Set temporary fact
+      set_fact:
+        _scylla_repo_default: "http://downloads.scylladb.com/rpm/centos/scylla-{{ _split_version[0] }}.{{ _split_version[1] }}.repo"
+
+    - name: Set scylla_rpm_repos
+      set_fact:
+        scylla_rpm_repos: [ "{{ _scylla_repo_default }}" ]
+  when: ansible_os_family|lower == 'redhat' and scylla_rpm_repos is not defined
+