diff --git a/test/issue672-upgrade-optional.sh b/test/issue672-upgrade-optional.sh
index 15e07d2..a8f841c 100755
--- a/test/issue672-upgrade-optional.sh
+++ b/test/issue672-upgrade-optional.sh
@@ -3,9 +3,9 @@
 . $(dirname "${BASH_SOURCE[0]}")/common.sh
 cd ${CURR_DIR}/issue672-upgrade-optional
 rm -rf b/.dub
-echo "{\"fileVersion\": 1,\"versions\": {\"dub\": \"1.0.0\"}}" > dub.selections.json
+echo "{\"fileVersion\": 1,\"versions\": {\"dub\": \"1.5.0\"}}" > dub.selections.json
 ${DUB} upgrade
 
-if ! grep -c -e "\"dub\": \"1.1.0\"" dub.selections.json; then
+if ! grep -c -e "\"dub\": \"1.6.0\"" dub.selections.json; then
 	die $LINENO 'Dependency not upgraded.'
 fi
diff --git a/test/issue672-upgrade-optional/dub.sdl b/test/issue672-upgrade-optional/dub.sdl
index 9b142c3..28d82b1 100644
--- a/test/issue672-upgrade-optional/dub.sdl
+++ b/test/issue672-upgrade-optional/dub.sdl
@@ -1,2 +1,2 @@
 name "b"
-dependency "dub" version=">=1.0.0 <=1.1.0" optional=true
+dependency "dub" version=">=1.5.0 <=1.6.0" optional=true
diff --git a/test/issue672-upgrade-optional/dub.selections.json b/test/issue672-upgrade-optional/dub.selections.json
index 712a9f6..0990100 100644
--- a/test/issue672-upgrade-optional/dub.selections.json
+++ b/test/issue672-upgrade-optional/dub.selections.json
@@ -1,6 +1,6 @@
 {
 	"fileVersion": 1,
 	"versions": {
-		"dub": "1.1.0"
+		"dub": "1.5.0"
 	}
 }