diff --git a/distribution/gentoo/mail-filter/pyquarantine-milter/pyquarantine-milter-9999.ebuild b/distribution/gentoo/mail-filter/pyquarantine-milter/pyquarantine-milter-9999.ebuild
index 608c605..3f4ea4d 100644
--- a/distribution/gentoo/mail-filter/pyquarantine-milter/pyquarantine-milter-9999.ebuild
+++ b/distribution/gentoo/mail-filter/pyquarantine-milter/pyquarantine-milter-9999.ebuild
@@ -37,7 +37,7 @@ RDEPEND="
 	lxml? ( dev-python/lxml[${PYTHON_USEDEP}] )
 	dev-python/netaddr[${PYTHON_USEDEP}]
 	dev-python/peewee[${PYTHON_USEDEP}]
-	dev-python/pymilter[${PYTHON_USEDEP}]"
+	>=dev-python/pymilter-1.5[${PYTHON_USEDEP}]"
 
 python_install_all() {
 	distutils-r1_python_install_all
diff --git a/setup.py b/setup.py
index c83624e..496b018 100644
--- a/setup.py
+++ b/setup.py
@@ -48,6 +48,6 @@ setup(name = "pyquarantine",
             ]
         )
     ],
-    install_requires = ["pymilter", "jsonschema", "netaddr", "beautifulsoup4[lxml]", "peewee"],
+    install_requires = ["pymilter >= 1.5", "jsonschema", "netaddr", "beautifulsoup4[lxml]", "peewee"],
     python_requires = ">=3.9"
 )