diff --git a/CHANGELOG.md b/CHANGELOG.md
index 57462d1e1..239e6130e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,9 @@
 # dbt-utils v0.7.0 (unreleased)
 * Added optional `where` clause in `unique_combination_of_columns` test macro [#295](https://github.com/fishtown-analytics/dbt-utils/pull/295) [findinpath](https://github.com/findinpath)
 
+## Breaking changes:
+- [Potential breaking change] The BigQuery implementations of `dateadd` and `datediff` macros now use `timestamp` types instead of `datetime` types, to be more consistent with other warehouses ([#318](https://github.com/fishtown-analytics/dbt-utils/pull/318))
+
 ## Features
 * Add new `accepted_range` test ([#276](https://github.com/fishtown-analytics/dbt-utils/pull/276) [@joellabes](https://github.com/joellabes))
 * Make `expression_is_true` work as a column test (code originally in [#226](https://github.com/fishtown-analytics/dbt-utils/pull/226/) from [@elliottohara](https://github.com/elliottohara), merged via [#313])
diff --git a/integration_tests/models/schema_tests/test_recency.sql b/integration_tests/models/schema_tests/test_recency.sql
index d300e572b..d44b5bc18 100644
--- a/integration_tests/models/schema_tests/test_recency.sql
+++ b/integration_tests/models/schema_tests/test_recency.sql
@@ -1,12 +1,2 @@
-
-{% if target.type == 'postgres' %}
-
 select
     {{ dbt_utils.date_trunc('day', dbt_utils.current_timestamp()) }} as today
-
-{% else %}
-
-select
-    cast({{ dbt_utils.date_trunc('day', dbt_utils.current_timestamp()) }} as datetime) as today
-    
-{% endif %}
diff --git a/macros/cross_db_utils/dateadd.sql b/macros/cross_db_utils/dateadd.sql
index 71a882800..1455083ac 100644
--- a/macros/cross_db_utils/dateadd.sql
+++ b/macros/cross_db_utils/dateadd.sql
@@ -16,8 +16,8 @@
 
 {% macro bigquery__dateadd(datepart, interval, from_date_or_timestamp) %}
 
-        datetime_add(
-            cast( {{ from_date_or_timestamp }} as datetime),
+        timestamp_add(
+            cast( {{ from_date_or_timestamp }} as timestamp),
         interval {{ interval }} {{ datepart }}
         )
 
diff --git a/macros/cross_db_utils/datediff.sql b/macros/cross_db_utils/datediff.sql
index ab5559d7c..b91f8e86b 100644
--- a/macros/cross_db_utils/datediff.sql
+++ b/macros/cross_db_utils/datediff.sql
@@ -16,9 +16,9 @@
 
 {% macro bigquery__datediff(first_date, second_date, datepart) %}
 
-    datetime_diff(
-        cast({{second_date}} as datetime),
-        cast({{first_date}} as datetime),
+    timestamp_diff(
+        cast({{second_date}} as timestamp_diff),
+        cast({{first_date}} as timestamp_diff),
         {{datepart}}
     )
 
diff --git a/macros/schema_tests/recency.sql b/macros/schema_tests/recency.sql
index cc17e8475..0a3306fc7 100644
--- a/macros/schema_tests/recency.sql
+++ b/macros/schema_tests/recency.sql
@@ -12,6 +12,6 @@ select
     end as error_result
 from {{model}}
 where {{column_name}} >=
-    {{dbt_utils.dateadd(datepart, interval * -1, dbt_utils.current_timestamp())}}
+    {{ dbt_utils.dateadd(datepart, interval * -1, dbt_utils.current_timestamp()) }}
 
 {% endmacro %}