diff --git a/dub.json b/dub.json
index 2569b2b..02aa44e 100644
--- a/dub.json
+++ b/dub.json
@@ -5,8 +5,8 @@
 	],
 	"copyright": "Copyright © 2020, Tristan B. Kildaire",
 	"dependencies": {
-		"bformat": "~>1.0.4",
-		"vibe-d": "~>0.8.6"
+		"bformat": "1.0.4",
+		"vibe-d": "0.9.0-alpha.4"
 	},
 	"description": "Bester protocol daemon. ",
 	"license": "AGPL v3",
diff --git a/dub.selections.json b/dub.selections.json
index b9cd979..0c13ab2 100644
--- a/dub.selections.json
+++ b/dub.selections.json
@@ -14,6 +14,6 @@
 		"stdx-allocator": "2.77.5",
 		"taggedalgebraic": "0.11.13",
 		"vibe-core": "1.9.1",
-		"vibe-d": "0.8.6"
+		"vibe-d": "0.9.0-alpha.4"
 	}
 }