diff --git a/CTFd/plugins/dynamic_challenges/migrations/b37fb68807ea_add_cascading_delete_to_dynamic_.py b/CTFd/plugins/dynamic_challenges/migrations/b37fb68807ea_add_cascading_delete_to_dynamic_.py
index 6b4a35fc..b28d5708 100644
--- a/CTFd/plugins/dynamic_challenges/migrations/b37fb68807ea_add_cascading_delete_to_dynamic_.py
+++ b/CTFd/plugins/dynamic_challenges/migrations/b37fb68807ea_add_cascading_delete_to_dynamic_.py
@@ -13,10 +13,17 @@ depends_on = None
 
 
 def upgrade(op=None):
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_constraint(
-        "dynamic_challenge_ibfk_1", "dynamic_challenge", type_="foreignkey"
-    )
+    bind = op.get_bind()
+    url = str(bind.engine.url)
+    if url.startswith("mysql"):
+        op.drop_constraint(
+            "dynamic_challenge_ibfk_1", "dynamic_challenge", type_="foreignkey"
+        )
+    elif url.startswith("postgres"):
+        op.drop_constraint(
+            "dynamic_challenge_id_fkey", "dynamic_challenge", type_="foreignkey"
+        )
+
     op.create_foreign_key(
         None, "dynamic_challenge", "challenges", ["id"], ["id"], ondelete="CASCADE"
     )
@@ -24,7 +31,15 @@ def upgrade(op=None):
 
 
 def downgrade(op=None):
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_constraint(None, "dynamic_challenge", type_="foreignkey")
+    bind = op.get_bind()
+    url = str(bind.engine.url)
+    if url.startswith("mysql"):
+        op.drop_constraint(
+            "dynamic_challenge_ibfk_1", "dynamic_challenge", type_="foreignkey"
+        )
+    elif url.startswith("postgres"):
+        op.drop_constraint(
+            "dynamic_challenge_id_fkey", "dynamic_challenge", type_="foreignkey"
+        )
+
     op.create_foreign_key(None, "dynamic_challenge", "challenges", ["id"], ["id"])
-    # ### end Alembic commands ###