diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25e0e54..f573dcc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@
 ## Under the hood
 ## Fixes
 
+# edu_edfi_source v0.4.1
+## Fixes
+- Fix surrogate key creation for `stg_ef3__student_contact_associations` to properly hanlde lowering of alphanumeric columns that are part of natural keys
+
 # edu_edfi_source v0.4.0
 ## New features
 - Add `stg_ef3__stu_ed_org__cohort_years` tracking student cohort designations (flattens Ed-Fi collection `cohort_years` for easier downstream use)
diff --git a/dbt_project.yml b/dbt_project.yml
index 9abc715..87d41c3 100644
--- a/dbt_project.yml
+++ b/dbt_project.yml
@@ -1,7 +1,7 @@
 config-version: 2
 
 name: 'edu_edfi_source'
-version: '0.4.0'
+version: '0.4.1'
 require-dbt-version: [">=1.0.0", "<2.0.0"]
 
 # This setting configures which "profile" dbt uses for this project.
diff --git a/models/staging/edfi_3/stage/stg_ef3__student_contact_associations.sql b/models/staging/edfi_3/stage/stg_ef3__student_contact_associations.sql
index 984f368..365ead2 100644
--- a/models/staging/edfi_3/stage/stg_ef3__student_contact_associations.sql
+++ b/models/staging/edfi_3/stage/stg_ef3__student_contact_associations.sql
@@ -22,7 +22,7 @@ keyed as (
     select 
         {{ gen_skey('k_student') }},
         -- we can't use the gen_skey macro here because we're bringing in the deprecated parents endpoint data, which contains a parentReference that won't work
-        {{ dbt_utils.generate_surrogate_key(['tenant_code', 'contact_unique_id']) }} as k_contact,
+        {{ dbt_utils.generate_surrogate_key(['tenant_code', 'lower(contact_unique_id)']) }} as k_contact,
         {{ gen_skey('k_student_xyear') }},
         api_year as school_year,
         unioned.*