diff --git a/backend/app/models/fork_point.py b/backend/app/models/fork_point.py
index 135aedcf..a5700774 100644
--- a/backend/app/models/fork_point.py
+++ b/backend/app/models/fork_point.py
@@ -30,6 +30,6 @@ class ForkPoint(Base):
     created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))
 
     # Relationships
-    session: Mapped["AISession"] = relationship("AISession")
-    parent_branch: Mapped["SessionBranch"] = relationship("SessionBranch")
-    trigger_step: Mapped[Optional["AISessionStep"]] = relationship("AISessionStep")
+    session: Mapped["AISession"] = relationship("AISession", foreign_keys=[session_id])
+    parent_branch: Mapped["SessionBranch"] = relationship("SessionBranch", foreign_keys=[parent_branch_id])
+    trigger_step: Mapped[Optional["AISessionStep"]] = relationship("AISessionStep", foreign_keys=[trigger_step_id])
diff --git a/backend/app/models/session_handoff.py b/backend/app/models/session_handoff.py
index a62c932b..fe679353 100644
--- a/backend/app/models/session_handoff.py
+++ b/backend/app/models/session_handoff.py
@@ -44,7 +44,7 @@ class SessionHandoff(Base):
     created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))
 
     # Relationships
-    session: Mapped["AISession"] = relationship("AISession")
+    session: Mapped["AISession"] = relationship("AISession", foreign_keys=[session_id])
     handed_off_by_user: Mapped["User"] = relationship("User", foreign_keys=[handed_off_by])
-    source_branch: Mapped[Optional["SessionBranch"]] = relationship("SessionBranch")
+    source_branch: Mapped[Optional["SessionBranch"]] = relationship("SessionBranch", foreign_keys=[source_branch_id])
     claimed_by_user: Mapped[Optional["User"]] = relationship("User", foreign_keys=[claimed_by])
diff --git a/backend/app/models/session_resolution_output.py b/backend/app/models/session_resolution_output.py
index f00c2772..83803593 100644
--- a/backend/app/models/session_resolution_output.py
+++ b/backend/app/models/session_resolution_output.py
@@ -36,4 +36,4 @@ class SessionResolutionOutput(Base):
     updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc))
 
     # Relationships
-    session = relationship("AISession")
+    session = relationship("AISession", foreign_keys="SessionResolutionOutput.session_id")