diff --git a/aurweb/models/package_comment.py b/aurweb/models/package_comment.py
index c52ee270..92ae8911 100644
--- a/aurweb/models/package_comment.py
+++ b/aurweb/models/package_comment.py
@@ -17,7 +17,8 @@ class PackageComment(Base):
         Integer, ForeignKey("PackageBases.ID", ondelete="CASCADE"),
         nullable=False)
     PackageBase = relationship(
-        "PackageBase", backref=backref("comments", lazy="dynamic"),
+        "PackageBase", backref=backref("comments", lazy="dynamic",
+                                       cascade="all,delete"),
         foreign_keys=[PackageBaseID])
 
     UsersID = Column(Integer, ForeignKey("Users.ID", ondelete="SET NULL"))
diff --git a/aurweb/models/package_dependency.py b/aurweb/models/package_dependency.py
index 9ce0b019..fb66c6f2 100644
--- a/aurweb/models/package_dependency.py
+++ b/aurweb/models/package_dependency.py
@@ -15,7 +15,8 @@ class PackageDependency(Base):
         Integer, ForeignKey("Packages.ID", ondelete="CASCADE"),
         nullable=False)
     Package = relationship(
-        "Package", backref=backref("package_dependencies", lazy="dynamic"),
+        "Package", backref=backref("package_dependencies", lazy="dynamic",
+                                   cascade="all,delete"),
         foreign_keys=[PackageID])
 
     DepTypeID = Column(
diff --git a/aurweb/models/package_relation.py b/aurweb/models/package_relation.py
index 1e6c146c..d4921859 100644
--- a/aurweb/models/package_relation.py
+++ b/aurweb/models/package_relation.py
@@ -16,7 +16,8 @@ class PackageRelation(Base):
         Integer, ForeignKey("Packages.ID", ondelete="CASCADE"),
         nullable=False)
     Package = relationship(
-        "Package", backref=backref("package_relations", lazy="dynamic"),
+        "Package", backref=backref("package_relations", lazy="dynamic",
+                                   cascade="all,delete"),
         foreign_keys=[PackageID])
 
     RelTypeID = Column(
diff --git a/aurweb/models/package_source.py b/aurweb/models/package_source.py
index 4ffa23df..f016bee0 100644
--- a/aurweb/models/package_source.py
+++ b/aurweb/models/package_source.py
@@ -13,7 +13,8 @@ class PackageSource(Base):
     PackageID = Column(Integer, ForeignKey("Packages.ID", ondelete="CASCADE"),
                        nullable=False)
     Package = relationship(
-        "Package", backref=backref("package_sources", lazy="dynamic"),
+        "Package", backref=backref("package_sources", lazy="dynamic",
+                                   cascade="all,delete"),
         foreign_keys=[PackageID])
 
     __mapper_args__ = {"primary_key": [PackageID]}