diff --git a/sys-fs/cryfs/cryfs-1.0.1.ebuild b/sys-fs/cryfs/cryfs-1.0.1.ebuild
index e84bb6a6184cd..dfbb7de32b8eb 100644
--- a/sys-fs/cryfs/cryfs-1.0.1.ebuild
+++ b/sys-fs/cryfs/cryfs-1.0.1.ebuild
@@ -4,7 +4,7 @@
 EAPI=8
 
 PYTHON_COMPAT=( python3_{10..13} )
-inherit cmake flag-o-matic linux-info python-any-r1
+inherit cmake eapi9-ver flag-o-matic linux-info python-any-r1
 
 if [[ ${PV} == 9999 ]] ; then
 	inherit git-r3
@@ -165,16 +165,11 @@ src_install() {
 }
 
 pkg_postinst() {
-	if [[ -n ${REPLACING_VERSIONS} ]] ; then
-		for ver in "${REPLACING_VERSIONS[@]}" ; do
-			if ver_test "${ver}" -lt 1.0.0; then
-				elog "Filesystems created with CryFS 0.11.x and CryFS 1.0.0 are fully compatible with each other."
-				elog "This means filesystems created with 0.10.x or 0.11.x can be mounted without requiring a migration."
-				elog "Filesystems created with 1.0.0 or 0.11.x can be mounted by CryFS 0.10.x,"
-				elog "but only if you configure it to use a cipher supported by CryFS 0.10.x, e.g. AES-256-GCM."
-				elog "The new default, XChaCha20-Poly1305, is not supported by CryFS 0.10.x."
-				break
-			fi
-		done
+	if ver_replacing -lt 1.0.0; then
+		elog "Filesystems created with CryFS 0.11.x and CryFS 1.0.0 are fully compatible with each other."
+		elog "This means filesystems created with 0.10.x or 0.11.x can be mounted without requiring a migration."
+		elog "Filesystems created with 1.0.0 or 0.11.x can be mounted by CryFS 0.10.x,"
+		elog "but only if you configure it to use a cipher supported by CryFS 0.10.x, e.g. AES-256-GCM."
+		elog "The new default, XChaCha20-Poly1305, is not supported by CryFS 0.10.x."
 	fi
 }