diff --git a/data/software/calliope.json b/data/software/calliope.json
index d332482..4d725d2 100644
--- a/data/software/calliope.json
+++ b/data/software/calliope.json
@@ -1,7 +1,8 @@
 {
     "name": "Calliope",
     "categories": [
-        "capacity-expansion"
+        "capacity-expansion",
+        "production-cost"
     ],
     "languages": [
         "python"
@@ -16,4 +17,4 @@
     "url_website": "https://callio.pe",
     "url_sourcecode": "https://github.com/calliope-project/calliope/",
     "url_docs": "https://calliope.readthedocs.io"
-}
\ No newline at end of file
+}