diff --git a/examples/discrete_vs_nodiscrete.rs b/examples/discrete_vs_nodiscrete.rs
index a55b61c..dda68a8 100644
--- a/examples/discrete_vs_nodiscrete.rs
+++ b/examples/discrete_vs_nodiscrete.rs
@@ -108,7 +108,7 @@ fn main() {
             FixedTimeSATSolver::without_optimality_check(soln.clone());
             let optimality_proof_dur = timer.elapsed();
 
-            let sat_flexible_time_problem = sat_flexible_time_model::Problem { requests };
+            let sat_flexible_time_problem = sat_flexible_time_model::Problem { requests, dependencies: vec![] , one_of_dependencies: vec![]};
 
             let stop = Arc::new(AtomicBool::new(false));
 
diff --git a/src/algorithms/sat_flexible_time_model.rs b/src/algorithms/sat_flexible_time_model.rs
index 5064cd8..2a4a2ca 100644
--- a/src/algorithms/sat_flexible_time_model.rs
+++ b/src/algorithms/sat_flexible_time_model.rs
@@ -22,6 +22,12 @@ pub struct Problem {
     /// A vector of requests. A solved problem will satisfy at least one "alternative"
     /// within a request.
     pub requests: Vec<Vec<ReservationRequestAlternative>>,
+
+    /// Dependency one of the
+    pub one_of_dependencies: Vec<Vec<(usize, usize)>>,
+
+    /// Dependency of the form (a, b) where a is the request id and b is the alternative id.
+    pub dependencies: Vec<((usize, usize), (usize, usize))>
 }
 
 impl Problem {
@@ -959,6 +965,8 @@ fn test_flexible_one_item_sat_solver() {
 
     let problem = Problem {
         requests: vec![req1],
+        one_of_dependencies: vec![],
+        dependencies: vec![]
     };
 
     let stop = Arc::new(AtomicBool::new(false));
@@ -1022,6 +1030,8 @@ fn test_flexible_two_items_sat_solver() {
 
     let problem = Problem {
         requests: vec![req1, req2],
+        one_of_dependencies: vec![],
+        dependencies: vec![]
     };
 
     let stop = Arc::new(AtomicBool::new(false));
@@ -1067,7 +1077,7 @@ fn test_flexible_n_items_sat_solver() {
         }]);
     }
 
-    let problem = Problem { requests };
+    let problem = Problem { requests, dependencies: vec![], one_of_dependencies: vec![] };
 
     let stop = Arc::new(AtomicBool::new(false));
     let model = SATFlexibleTimeModel {
@@ -1112,7 +1122,7 @@ fn test_flexible_no_soln_sat_solver() {
         }]);
     }
 
-    let problem = Problem { requests };
+    let problem = Problem { requests, one_of_dependencies: vec![], dependencies: vec![] };
 
     let stop = Arc::new(AtomicBool::new(false));
     let model = SATFlexibleTimeModel {
diff --git a/src/database/mod.rs b/src/database/mod.rs
index 46e88b4..905454a 100644
--- a/src/database/mod.rs
+++ b/src/database/mod.rs
@@ -374,7 +374,10 @@ impl<ClockType: ClockSource + Clone + std::marker::Send + std::marker::Sync + 's
             }
         }
 
-        let problem = super::algorithms::sat_flexible_time_model::Problem { requests };
+        let problem = super::algorithms::sat_flexible_time_model::Problem { requests,
+            one_of_dependencies: vec![],
+            dependencies: vec![]
+         };
 
         Snapshot {
             problem,