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@@ -350,9 +350,9 @@ Courses | Duration | Effort | Prerequisites
 
 Courses | Duration | Effort | Prerequisites
 :-- | :--: | :--: | :--:
-[Computation Structures 1: Digital Circuits](https://www.edx.org/course/computation-structures-part-1-digital-circuits) | 10 weeks | 6 hours/week | [Nand2Tetris II](https://www.coursera.org/learn/nand2tetris2)
-[Computation Structures 2: Computer Architecture](https://www.edx.org/course/computation-structures-2-computer-architecture-2) | 10 weeks | 6 hours/week | Computation Structures 1
-[Computation Structures 3: Computer Organization](https://www.edx.org/course/computation-structures-3-computer-organization-2) | 10 weeks | 6 hours/week | Computation Structures 2
+[Computation Structures 1: Digital Circuits](https://learning.edx.org/course/course-v1:MITx+6.004.1x_3+3T2016) | 10 weeks | 6 hours/week | [Nand2Tetris II](https://www.coursera.org/learn/nand2tetris2)
+[Computation Structures 2: Computer Architecture](https://learning.edx.org/course/course-v1:MITx+6.004.2x+3T2015) | 10 weeks | 6 hours/week | Computation Structures 1
+[Computation Structures 3: Computer Organization](https://learning.edx.org/course/course-v1:MITx+6.004.3x_2+1T2017) | 10 weeks | 6 hours/week | Computation Structures 2
 
 ### Advanced theory