diff --git a/.changes/unreleased/Fixes-20230425-155445.yaml b/.changes/unreleased/Fixes-20230425-155445.yaml
new file mode 100644
index 00000000000..9ce0ea2332f
--- /dev/null
+++ b/.changes/unreleased/Fixes-20230425-155445.yaml
@@ -0,0 +1,7 @@
+kind: Fixes
+body: '[CT-2343] [Bug] snapshot with custom datatypes breaks when source table is
+  regenerated'
+time: 2023-04-25T15:54:45.1782743+01:00
+custom:
+  Author: benorourke
+  Issue: "7248"
diff --git a/plugins/postgres/dbt/include/postgres/macros/adapters.sql b/plugins/postgres/dbt/include/postgres/macros/adapters.sql
index 07892f35b4b..f09efaac2cb 100644
--- a/plugins/postgres/dbt/include/postgres/macros/adapters.sql
+++ b/plugins/postgres/dbt/include/postgres/macros/adapters.sql
@@ -60,7 +60,10 @@
   {% call statement('get_columns_in_relation', fetch_result=True) %}
       select
           column_name,
-          data_type,
+          case
+            when (data_type = 'USER-DEFINED') then concat(udt_schema || '.' || udt_name)
+            else data_type
+          end as data_type,
           character_maximum_length,
           numeric_precision,
           numeric_scale