1 files changed, 3 insertions, 1 deletions
diff --git a/src/libstore/http-binary-cache-store.cc b/src/libstore/http-binary-cache-store.cc
index 9d31f77c921f..37a7d6ace142 100644
--- a/src/libstore/http-binary-cache-store.cc
+++ b/src/libstore/http-binary-cache-store.cc
@@ -64,7 +64,9 @@ protected:
         }
     }
 
-    void upsertFile(const std::string & path, const std::string & data) override
+    void upsertFile(const std::string & path,
+        const std::string & data,
+        const std::string & mimeType) override
     {
         throw UploadToHTTP("uploading to an HTTP binary cache is not supported");
     }