diff --git a/PARALLEL_PROJECT_NOTES.md b/PARALLEL_PROJECT_NOTES.md
index 4f1cff598..36ff74d15 100644
--- a/PARALLEL_PROJECT_NOTES.md
+++ b/PARALLEL_PROJECT_NOTES.md
@@ -2,7 +2,10 @@
 
 
 
-We track notes for updates to smt/parallel.cpp and possibly solver/parallel\_tactic.cpp
+We track notes for updates to 
+[smt/parallel.cpp](https://github.com/Z3Prover/z3/blob/master/src/smt/smt_parallel.cpp) 
+and possibly 
+[https://github.com/Z3Prover/z3/blob/master/src/solver/parallel_tactic.cpp](solver/parallel_tactic.cpp).
 
 
 
@@ -116,4 +119,4 @@ Threads can work on more than one cube in a batch.
 ### Synchronization
 
 * The first thread to time out or finish could kill other threads instead of joining on all threads to finish.
-* Instead of synchronization barriers have threads continue concurrently without terminating. They synchronize on signals and new units. This is trickier to implement, but in some guises accomplished in sat/sat_parallel.cpp.
+* Instead of synchronization barriers have threads continue concurrently without terminating. They synchronize on signals and new units. This is trickier to implement, but in some guises accomplished in [sat/sat_parallel.cpp](https://github.com/Z3Prover/z3/blob/master/src/sat/sat_parallel.cpp)