diff --git a/sstables/version.hh b/sstables/version.hh
index 006d70d7ff..8c3c975ec0 100644
--- a/sstables/version.hh
+++ b/sstables/version.hh
@@ -17,24 +17,20 @@ namespace sstables {
 enum class sstable_version_types { ka, la, mc, md, me, ms };
 enum class sstable_format_types { big };
 
-constexpr std::array<sstable_version_types, 5> all_sstable_versions = {
+constexpr std::array<sstable_version_types, 6> all_sstable_versions = {
     sstable_version_types::ka,
     sstable_version_types::la,
     sstable_version_types::mc,
     sstable_version_types::md,
     sstable_version_types::me,
-    // FIXME: Uncomment after tests are prepared for the new
-    // version. This will happen in the same series.
-    // sstable_version_types::ms,
+    sstable_version_types::ms,
 };
 
-constexpr std::array<sstable_version_types, 3> writable_sstable_versions = {
+constexpr std::array<sstable_version_types, 4> writable_sstable_versions = {
     sstable_version_types::mc,
     sstable_version_types::md,
     sstable_version_types::me,
-    // FIXME: Uncomment after tests are prepared for the new
-    // version. This will happen in the same series.
-    // sstable_version_types::ms,
+    sstable_version_types::ms,
 };
 
 constexpr sstable_version_types oldest_writable_sstable_format = sstable_version_types::mc;
diff --git a/test/boost/schema_changes_test.cc b/test/boost/schema_changes_test.cc
index 0aa87deef7..da6448fd40 100644
--- a/test/boost/schema_changes_test.cc
+++ b/test/boost/schema_changes_test.cc
@@ -19,10 +19,11 @@
 using namespace sstables;
 using namespace std::chrono_literals;
 
-constexpr std::array<sstable_version_types, 3> expected_writable_sstable_versions = {
+constexpr std::array<sstable_version_types, 4> expected_writable_sstable_versions = {
 sstable_version_types::mc,
 sstable_version_types::md,
 sstable_version_types::me,
+sstable_version_types::ms,
 };
 
 // Add/remove test cases if writable_sstable_versions changes
@@ -30,6 +31,7 @@ static_assert(writable_sstable_versions.size() == expected_writable_sstable_vers
 static_assert(writable_sstable_versions[0] == expected_writable_sstable_versions[0], "writable_sstable_versions changed");
 static_assert(writable_sstable_versions[1] == expected_writable_sstable_versions[1], "writable_sstable_versions changed");
 static_assert(writable_sstable_versions[2] == expected_writable_sstable_versions[2], "writable_sstable_versions changed");
+static_assert(writable_sstable_versions[3] == expected_writable_sstable_versions[3], "writable_sstable_versions changed");
 
 future <> test_schema_changes_int(sstable_version_types sstable_vtype) {
   return sstables::test_env::do_with_async([] (sstables::test_env& env) {
@@ -79,3 +81,7 @@ SEASTAR_TEST_CASE(test_schema_changes_md) {
 SEASTAR_TEST_CASE(test_schema_changes_me) {
     return test_schema_changes_int(sstable_version_types::me);
 }
+
+SEASTAR_TEST_CASE(test_schema_changes_ms) {
+    return test_schema_changes_int(sstable_version_types::ms);
+}
\ No newline at end of file
diff --git a/test/boost/sstable_conforms_to_mutation_source_test.cc b/test/boost/sstable_conforms_to_mutation_source_test.cc
index 2765039624..8b1b16df48 100644
--- a/test/boost/sstable_conforms_to_mutation_source_test.cc
+++ b/test/boost/sstable_conforms_to_mutation_source_test.cc
@@ -142,8 +142,20 @@ SEASTAR_TEST_CASE(test_sstable_conforms_to_mutation_source_md_large) {
     return test_sstable_conforms_to_mutation_source(writable_sstable_versions[1], block_sizes[2]);
 }
 
+SEASTAR_TEST_CASE(test_sstable_conforms_to_mutation_source_ms_tiny) {
+    return test_sstable_conforms_to_mutation_source(sstable_version_types::ms, block_sizes[0]);
+}
+
+SEASTAR_TEST_CASE(test_sstable_conforms_to_mutation_source_ms_medium) {
+    return test_sstable_conforms_to_mutation_source(sstable_version_types::ms, block_sizes[1]);
+}
+
+SEASTAR_TEST_CASE(test_sstable_conforms_to_mutation_source_ms_large) {
+    return test_sstable_conforms_to_mutation_source(sstable_version_types::ms, block_sizes[2]);
+}
+
 // This SCYLLA_ASSERT makes sure we don't miss writable vertions
-static_assert(writable_sstable_versions.size() == 3);
+static_assert(writable_sstable_versions.size() == 4);
 
 // `keys` may contain repetitions.
 // The generated position ranges are non-empty. The start of each range in the vector is greater than the end of the previous range.