diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 336ef71..829ac98 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -35,7 +35,9 @@ jobs:
       with:
         python-version: 3.9
     - name: install Poetry
-      uses: snok/install-poetry@v1.3.3
+      uses: snok/install-poetry@v1.4.1
+      with:
+        version: 1.8.5
     - name: cache Poetry virtualenv
       uses: actions/cache@v4
       id: cache
diff --git a/api/db/models/bills.py b/api/db/models/bills.py
index dfadd39..0ad26cc 100644
--- a/api/db/models/bills.py
+++ b/api/db/models/bills.py
@@ -96,6 +96,7 @@ class BillIdentifier(BillRelatedBase, Base):
     __tablename__ = "opencivicdata_billidentifier"
 
     identifier = Column(String)
+    bill_id = Column(String, ForeignKey(Bill.id))
 
 
 class BillAction(BillRelatedBase, Base):
diff --git a/api/schemas.py b/api/schemas.py
index 0615602..369a9fd 100644
--- a/api/schemas.py
+++ b/api/schemas.py
@@ -146,6 +146,13 @@ class Config:
         orm_mode = True
 
 
+class BillIdentifier(BaseModel):
+    identifier: str = Field(..., example="ocd-bill-mn-2025_2026-sf827")
+
+    class Config:
+        orm_mode = True
+
+
 class CompactJurisdiction(BaseModel):
     id: str = Field(..., example="ocd-jurisdiction/country:us/state:nc/government")
     name: str = Field(..., example="North Carolina")
@@ -170,6 +177,7 @@ class CompactBill(BaseModel):
     session: str
     identifier: str
     title: str
+    other_identifiers: Optional[List[BillIdentifier]]
 
     class Config:
         orm_mode = True
@@ -238,13 +246,6 @@ class Config:
         orm_mode = True
 
 
-class BillIdentifier(BaseModel):
-    identifier: str = Field(..., example="HB 74")
-
-    class Config:
-        orm_mode = True
-
-
 class BillSponsorship(BaseModel):
     id: UUID = Field(..., example="f0049138-1ad8-4506-a2a4-f4dd1251bbba")
     name: str = Field(..., example="JONES")