diff --git a/dev-python/ipython/ipython-5.4.1-r1.ebuild b/dev-python/ipython/ipython-5.4.1-r1.ebuild
index 787088fd8d660..39d2a6d696d5e 100644
--- a/dev-python/ipython/ipython-5.4.1-r1.ebuild
+++ b/dev-python/ipython/ipython-5.4.1-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -23,6 +23,7 @@ CDEPEND="
 	dev-python/pexpect[${PYTHON_USEDEP}]
 	dev-python/pickleshare[${PYTHON_USEDEP}]
 	>=dev-python/prompt_toolkit-1.0.4[${PYTHON_USEDEP}]
+	<dev-python/prompt_toolkit-2[${PYTHON_USEDEP}]
 	dev-python/pyparsing[${PYTHON_USEDEP}]
 	dev-python/simplegeneric[${PYTHON_USEDEP}]
 	>=dev-python/traitlets-4.2.1[${PYTHON_USEDEP}]
diff --git a/dev-python/ipython/ipython-5.8.0.ebuild b/dev-python/ipython/ipython-5.8.0.ebuild
index 8f191191e87dc..7d8b1e5a7f175 100644
--- a/dev-python/ipython/ipython-5.8.0.ebuild
+++ b/dev-python/ipython/ipython-5.8.0.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -24,6 +24,7 @@ CDEPEND="
 	dev-python/pexpect[${PYTHON_USEDEP}]
 	dev-python/pickleshare[${PYTHON_USEDEP}]
 	>=dev-python/prompt_toolkit-1.0.4[${PYTHON_USEDEP}]
+	<dev-python/prompt_toolkit-2[${PYTHON_USEDEP}]
 	dev-python/pyparsing[${PYTHON_USEDEP}]
 	dev-python/simplegeneric[${PYTHON_USEDEP}]
 	>=dev-python/traitlets-4.2.1[${PYTHON_USEDEP}]