diff --git a/sci-libs/libsigrokdecode/libsigrokdecode-0.3.0.ebuild b/sci-libs/libsigrokdecode/libsigrokdecode-0.3.0.ebuild
index 7bc6975993c6d..93750d53273b1 100644
--- a/sci-libs/libsigrokdecode/libsigrokdecode-0.3.0.ebuild
+++ b/sci-libs/libsigrokdecode/libsigrokdecode-0.3.0.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2015 Gentoo Foundation
+# Copyright 1999-2017 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI="5"
@@ -18,7 +18,7 @@ DESCRIPTION="provide (streaming) protocol decoding functionality"
 HOMEPAGE="http://sigrok.org/wiki/Libsigrokdecode"
 
 LICENSE="GPL-3"
-SLOT="0"
+SLOT="0/2"
 IUSE="static-libs"
 REQUIRED_USE="${PYTHON_REQUIRED_USE}"
 
diff --git a/sci-libs/libsigrokdecode/libsigrokdecode-0.4.0.ebuild b/sci-libs/libsigrokdecode/libsigrokdecode-0.4.0.ebuild
index fdb04d4236521..0fad9796fd4a4 100644
--- a/sci-libs/libsigrokdecode/libsigrokdecode-0.4.0.ebuild
+++ b/sci-libs/libsigrokdecode/libsigrokdecode-0.4.0.ebuild
@@ -19,7 +19,7 @@ DESCRIPTION="provide (streaming) protocol decoding functionality"
 HOMEPAGE="http://sigrok.org/wiki/Libsigrokdecode"
 
 LICENSE="GPL-3"
-SLOT="0"
+SLOT="0/3"
 IUSE="static-libs"
 REQUIRED_USE="${PYTHON_REQUIRED_USE}"
 
diff --git a/sci-libs/libsigrokdecode/libsigrokdecode-0.4.1.ebuild b/sci-libs/libsigrokdecode/libsigrokdecode-0.4.1.ebuild
index b73e6e5f4b7a6..dfce6f7f040e7 100644
--- a/sci-libs/libsigrokdecode/libsigrokdecode-0.4.1.ebuild
+++ b/sci-libs/libsigrokdecode/libsigrokdecode-0.4.1.ebuild
@@ -19,7 +19,7 @@ DESCRIPTION="provide (streaming) protocol decoding functionality"
 HOMEPAGE="http://sigrok.org/wiki/Libsigrokdecode"
 
 LICENSE="GPL-3"
-SLOT="0"
+SLOT="0/3"
 IUSE="static-libs"
 REQUIRED_USE="${PYTHON_REQUIRED_USE}"
 
diff --git a/sci-libs/libsigrokdecode/libsigrokdecode-0.5.0.ebuild b/sci-libs/libsigrokdecode/libsigrokdecode-0.5.0.ebuild
index b73e6e5f4b7a6..e185d3d1a8354 100644
--- a/sci-libs/libsigrokdecode/libsigrokdecode-0.5.0.ebuild
+++ b/sci-libs/libsigrokdecode/libsigrokdecode-0.5.0.ebuild
@@ -19,7 +19,7 @@ DESCRIPTION="provide (streaming) protocol decoding functionality"
 HOMEPAGE="http://sigrok.org/wiki/Libsigrokdecode"
 
 LICENSE="GPL-3"
-SLOT="0"
+SLOT="0/4"
 IUSE="static-libs"
 REQUIRED_USE="${PYTHON_REQUIRED_USE}"
 
diff --git a/sci-libs/libsigrokdecode/libsigrokdecode-9999.ebuild b/sci-libs/libsigrokdecode/libsigrokdecode-9999.ebuild
index b73e6e5f4b7a6..ee7e6bf69903b 100644
--- a/sci-libs/libsigrokdecode/libsigrokdecode-9999.ebuild
+++ b/sci-libs/libsigrokdecode/libsigrokdecode-9999.ebuild
@@ -19,7 +19,7 @@ DESCRIPTION="provide (streaming) protocol decoding functionality"
 HOMEPAGE="http://sigrok.org/wiki/Libsigrokdecode"
 
 LICENSE="GPL-3"
-SLOT="0"
+SLOT="0/9999"
 IUSE="static-libs"
 REQUIRED_USE="${PYTHON_REQUIRED_USE}"