diff --git a/test/functional/config/example_dut_config.yml b/test/functional/config/example_dut_config.yml
index 00180d8..e49f4a2 100644
--- a/test/functional/config/example_dut_config.yml
+++ b/test/functional/config/example_dut_config.yml
@@ -14,6 +14,15 @@ type: "local"
 allow_disk_autoselect: False
 working_dir: "/tmp/open-cas-linux/"
 
+# CAS version to test.
+# This version will be installed on DUT before test. Can be any string
+# digestible by git-checkout. If not specified, by default current state
+# of your controller's repo (HEAD) will be used as version to install.
+# NOTE: Make sure to have a local master branch synced with upstream
+# as the local repo will be taken for version reference. To do this
+# simply run: `git fetch origin master:master`
+cas_version: "master"
+
 disks:
   - path: "/dev/device_name1" # disk device path
     serial: "ABC"             # disk serial number
diff --git a/test/functional/tests/conftest.py b/test/functional/tests/conftest.py
index ce6a74c..b8f6ed3 100644
--- a/test/functional/tests/conftest.py
+++ b/test/functional/tests/conftest.py
@@ -275,12 +275,14 @@ def base_prepare(item):
             disk.remove_partitions()
             create_partition_table(disk, PartitionTable.gpt)
 
+        cas_version = TestRun.config.get("cas_version") or git.get_current_commit_hash()
         if get_force_param(item) and not TestRun.usr.already_updated:
             installer.rsync_opencas_sources()
-            installer.reinstall_opencas()
-        elif not installer.check_if_installed():
+            installer.reinstall_opencas(cas_version)
+        elif not installer.check_if_installed(cas_version):
             installer.rsync_opencas_sources()
-            installer.set_up_opencas()
+            installer.set_up_opencas(cas_version)
+
         TestRun.usr.already_updated = True
         TestRun.LOGGER.add_build_info(f'Commit hash:')
         TestRun.LOGGER.add_build_info(f"{git.get_current_commit_hash()}")