diff --git a/sql/patch_74_75_a.sql b/sql/patch_74_75_a.sql
new file mode 100644
index 0000000000000000000000000000000000000000..b5c587b45e401c21bde6abe70554ab56ce07cf6b
--- /dev/null
+++ b/sql/patch_74_75_a.sql
@@ -0,0 +1,12 @@
+# patch_74_75_a.sql
+#
+# Title: Update schema version.
+#
+# Description:
+#   Update schema_version in meta table to 75.
+
+UPDATE meta SET meta_value='75' WHERE meta_key='schema_version';
+
+# Patch identifier
+INSERT INTO meta (species_id, meta_key, meta_value)
+  VALUES (NULL, 'patch', 'patch_74_75_a.sql|schema_version');
diff --git a/sql/patch_74_75_b.sql b/sql/patch_74_75_b.sql
new file mode 100644
index 0000000000000000000000000000000000000000..860c35081d63fd894804cf6f6adca610877901c7
--- /dev/null
+++ b/sql/patch_74_75_b.sql
@@ -0,0 +1,13 @@
+# patch_74_75_b.sql
+#
+# Title: Add source to transcript
+#
+# Description: Column allowing an optional source to be added to a transcript
+
+ALTER TABLE transcript ADD COLUMN source VARCHAR(20) NOT NULL;
+
+# Patch identifier
+INSERT INTO meta (species_id, meta_key, meta_value)
+  VALUES (NULL, 'patch', 'patch_74_75_b.sql|transcript_source');
+
+