diff --git a/xexe/rate_writing.py b/xexe/rate_writing.py
index 29f57a3..722c0bb 100644
--- a/xexe/rate_writing.py
+++ b/xexe/rate_writing.py
@@ -142,7 +142,7 @@ class DWHRateWriter(RateWriter):
             CREATE TABLE IF NOT EXISTS {}.{} (
                 from_currency CHAR(3) NOT NULL,
                 to_currency CHAR(3) NOT NULL,
-                rate DECIMAL(19, 4) NOT NULL,
+                rate DECIMAL(23, 8) NOT NULL,
                 rate_date_utc DATE NOT NULL,
                 exported_at_utc TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
                 PRIMARY KEY (from_currency, to_currency, rate_date_utc)