diff --git a/ofl/cuprum/METADATA.pb b/ofl/cuprum/METADATA.pb
index 124efb811..8090c6da6 100644
--- a/ofl/cuprum/METADATA.pb
+++ b/ofl/cuprum/METADATA.pb
@@ -34,6 +34,7 @@ axes {
 }
 source {
   repository_url: "https://github.com/alexeiva/cuprum"
+  commit: "98adc59dc00ca00dbde9eb42a23ace5f924b4f90"
   files {
     source_file: "OFL.txt"
     dest_file: "OFL.txt"
diff --git a/ofl/cuprum/config.yaml b/ofl/cuprum/config.yaml
new file mode 100644
index 000000000..252b32c5e
--- /dev/null
+++ b/ofl/cuprum/config.yaml
@@ -0,0 +1,4 @@
+buildVariable: true
+sources:
+  - sources/Cuprum.designspace
+  - sources/Cuprum-Italic.designspace