diff --git a/procs/lastprice_logic.ms.sql b/procs/lastprice_logic.ms.sql
index 6c8b408..897ed17 100644
--- a/procs/lastprice_logic.ms.sql
+++ b/procs/lastprice_logic.ms.sql
@@ -15,7 +15,7 @@ RETURNS @result TABLE (
 )
 AS
 BEGIN
-	DECLARE @age_threshold DATE = DATEADD(year, -1, GETDATE());
+	DECLARE @age_threshold DATE = DATEADD(month, -18, GETDATE());
 
 	-- Extract all relevant objects from JSON
 	DECLARE @dsq NVARCHAR(MAX), @dss NVARCHAR(MAX), @mrq NVARCHAR(MAX), @mrs NVARCHAR(MAX);
diff --git a/procs/lastprice_logic.pg.sql b/procs/lastprice_logic.pg.sql
index a0e9f6a..5a0dcc5 100644
--- a/procs/lastprice_logic.pg.sql
+++ b/procs/lastprice_logic.pg.sql
@@ -12,7 +12,7 @@ DECLARE
 BEGIN
     -- Central control for age threshold
     DECLARE
-        age_threshold INTERVAL := INTERVAL '1 year';
+        age_threshold INTERVAL := INTERVAL '18 months';
         dsq_date DATE := NULL;
         dss_date DATE := NULL;
         mrq_date DATE := NULL;