diff --git a/sysutils/py-filelock/Makefile b/sysutils/py-filelock/Makefile
index 6c44ab601d4..b2b8767e6a1 100644
--- a/sysutils/py-filelock/Makefile
+++ b/sysutils/py-filelock/Makefile
@@ -1,6 +1,6 @@
 COMMENT=	platform independent file lock
 
-MODPY_EGG_VERSION=	3.15.1
+MODPY_EGG_VERSION=	3.15.4
 DISTNAME=	filelock-${MODPY_EGG_VERSION}
 PKGNAME=	py-${DISTNAME}
 
@@ -18,7 +18,8 @@ MODPY_PYBUILD=	hatch-vcs
 
 TEST_DEPENDS=	devel/py-test-cov${MODPY_FLAVOR} \
 		devel/py-test-mock${MODPY_FLAVOR} \
-		devel/py-test-timeout${MODPY_FLAVOR}
+		devel/py-test-timeout${MODPY_FLAVOR} \
+		devel/py-virtualenv${MODPY_FLAVOR}
 
 FLAVORS=	python3
 FLAVOR=		python3
diff --git a/sysutils/py-filelock/distinfo b/sysutils/py-filelock/distinfo
index 1617acfbc75..9c558e2bdd7 100644
--- a/sysutils/py-filelock/distinfo
+++ b/sysutils/py-filelock/distinfo
@@ -1,2 +1,2 @@
-SHA256 (filelock-3.15.1.tar.gz) = WKJUmv354C4Qcg6qTURw9WOG16b3Lt19BZYzevjtetg=
-SIZE (filelock-3.15.1.tar.gz) = 17564
+SHA256 (filelock-3.15.4.tar.gz) = IgeTjLwYRDRcsBpalVJNrjDwzgieulsAN4KVoX4+kMs=
+SIZE (filelock-3.15.4.tar.gz) = 18007