diff --git a/dev-util/cdecl/cdecl-14.0.ebuild b/dev-util/cdecl/cdecl-14.0.ebuild
index dc541f6508926..87e73c11a1cd5 100644
--- a/dev-util/cdecl/cdecl-14.0.ebuild
+++ b/dev-util/cdecl/cdecl-14.0.ebuild
@@ -1,4 +1,4 @@
-# Copyright 2021-2023 Gentoo Authors
+# Copyright 2021-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -19,7 +19,7 @@ DEPEND="
 RDEPEND="${DEPEND}"
 BDEPEND="
 	sys-devel/bison
-	sys-devel/flex
+	app-alternatives/lex
 "
 
 src_configure() {
diff --git a/dev-util/cdecl/cdecl-14.2.ebuild b/dev-util/cdecl/cdecl-14.2.ebuild
index a7c9e7ca8637c..25122f03a31dc 100644
--- a/dev-util/cdecl/cdecl-14.2.ebuild
+++ b/dev-util/cdecl/cdecl-14.2.ebuild
@@ -1,4 +1,4 @@
-# Copyright 2021-2023 Gentoo Authors
+# Copyright 2021-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -19,7 +19,7 @@ DEPEND="
 RDEPEND="${DEPEND}"
 BDEPEND="
 	sys-devel/bison
-	sys-devel/flex
+	app-alternatives/lex
 "
 
 src_configure() {