diff --git a/pkg/package/package.go b/pkg/package/package.go
index fbe68701..33bfa5ce 100644
--- a/pkg/package/package.go
+++ b/pkg/package/package.go
@@ -466,8 +466,10 @@ func Best(set []Package) Package {
 
 	versionsRaw := []string{}
 	for _, p := range set {
-		versionsRaw = append(versionsRaw, p.GetVersion())
-		versionsMap[p.GetVersion()] = p
+		// TODO: This is temporary!.
+		sanitizedVersion := strings.ReplaceAll(p.GetVersion(), "_", "-")
+		versionsRaw = append(versionsRaw, sanitizedVersion)
+		versionsMap[sanitizedVersion] = p
 	}
 
 	versions := make([]*version.Version, len(versionsRaw))
diff --git a/tests/fixtures/versioning/libsndfile/definition.yaml b/tests/fixtures/versioning/libsndfile/definition.yaml
index 81bf629a..5e5fa9d1 100644
--- a/tests/fixtures/versioning/libsndfile/definition.yaml
+++ b/tests/fixtures/versioning/libsndfile/definition.yaml
@@ -3,5 +3,5 @@ conflicts: null
 id: 0
 license: LGPL-2.1
 name: libsndfile
-version: 1.0.29+1
-#version: 1.0.29+pre2_p20191024.1
+#version: 1.0.29+1
+version: 1.0.29+pre2_p20191024.1