diff --git a/dub.selections.json b/dub.selections.json
index 2020332..877c7ff 100644
--- a/dub.selections.json
+++ b/dub.selections.json
@@ -1,11 +1,11 @@
 {
 	"fileVersion": 1,
 	"versions": {
-		"memutils": "0.3.2",
+		"memutils": "0.4.1",
 		"libevent": "2.0.1+2.0.16",
-		"vibe-d": "0.7.23",
+		"vibe-d": "0.7.24",
 		"openssl": "1.1.4+1.0.1g",
-		"libev": "5.0.0+4.04",
-		"libasync": "0.7.1"
+		"libasync": "0.7.5",
+		"libev": "5.0.0+4.04"
 	}
 }
diff --git a/travis-ci.sh b/travis-ci.sh
index e1363d7..082d4e2 100755
--- a/travis-ci.sh
+++ b/travis-ci.sh
@@ -2,6 +2,7 @@
 
 set -e -o pipefail
 
+dub fetch vibe-d # get optional dependency
 dub test --compiler=${DC} -c library-nonet
 
 if [ "$COVERAGE" = true ]; then