diff --git a/spack.yaml b/spack.yaml
index 41ef9c41eaf349f3b409e6547234748559b5c993..55e1158ca8ba3d331353389dd052c06a77f26ef8 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -65,7 +65,7 @@ spack:
     - biobb-gromacs
     - apbs
     - py-pdb2pqr
-    #- sda
+    - sda
     # demo for codejam12
     #- funniest1022
   concretizer: