diff --git a/database/migrations/functions/issues/get_issues_filters.sql b/database/migrations/functions/issues/get_issues_filters.sql
index 9625fbd..5db832f 100644
--- a/database/migrations/functions/issues/get_issues_filters.sql
+++ b/database/migrations/functions/issues/get_issues_filters.sql
@@ -22,11 +22,14 @@ returns json as $$
             'key', 'maturity',
             'options', (
                 select coalesce(json_agg(json_build_object(
-                    'name', initcap(maturity::text),
-                    'value', maturity::text
+                    'name', initcap(maturity),
+                    'value', maturity
                 )), '[]')
                 from (
-                    select unnest(enum_range(null::maturity)) as maturity
+                    select distinct maturity
+                    from project
+                    where maturity is not null
+                    order by maturity asc
                 ) m
             )
         ),
diff --git a/database/migrations/functions/issues/search_issues.sql b/database/migrations/functions/issues/search_issues.sql
index fa7dd76..a33a3bc 100644
--- a/database/migrations/functions/issues/search_issues.sql
+++ b/database/migrations/functions/issues/search_issues.sql
@@ -105,7 +105,7 @@ begin
             p.foundation_id = any(v_foundation) else true end
         and
             case when cardinality(v_maturity) > 0 then
-            p.maturity::text = any(v_maturity) else true end
+            p.maturity = any(v_maturity) else true end
         and
             case when cardinality(v_project) > 0 then
             p.name = any(v_project) else true end
diff --git a/database/migrations/functions/projects/register_project.sql b/database/migrations/functions/projects/register_project.sql
index a4df6b9..cbd931a 100644
--- a/database/migrations/functions/projects/register_project.sql
+++ b/database/migrations/functions/projects/register_project.sql
@@ -26,7 +26,7 @@ begin
         p_project->>'logo_dark_url',
         p_project->>'devstats_url',
         (p_project->>'accepted_at')::date,
-        (p_project->>'maturity')::maturity,
+        (p_project->>'maturity'),
         p_project->'maintainers_wanted',
         p_project->>'digest',
         p_foundation_id
diff --git a/database/migrations/schema/002_drop_maturity_type.sql b/database/migrations/schema/002_drop_maturity_type.sql
new file mode 100644
index 0000000..df123cc
--- /dev/null
+++ b/database/migrations/schema/002_drop_maturity_type.sql
@@ -0,0 +1,11 @@
+alter table project
+    alter column maturity type text using maturity::text,
+    add constraint maturity_not_empty_check check (maturity <> '');;
+drop type if exists maturity;
+
+---- create above / drop below ----
+
+create type maturity as enum ('graduated', 'incubating', 'sandbox');
+alter table project
+    drop constraint maturity_not_empty_check,
+    alter column maturity type maturity using maturity::maturity;