diff -Nru opengcs-0.3.4+dfsg2/debian/changelog opengcs-0.3.4+dfsg2/debian/changelog
--- opengcs-0.3.4+dfsg2/debian/changelog	2021-01-21 17:10:29.000000000 -0300
+++ opengcs-0.3.4+dfsg2/debian/changelog	2021-10-15 17:12:23.000000000 -0300
@@ -1,3 +1,10 @@
+opengcs (0.3.4+dfsg2-0ubuntu7) hirsute; urgency=medium
+
+  * d/p/0003-Add-support-for-runc-1.0.x.patch: Comply with the libcontainer
+    API changes introduced in runc 1.0.x (LP: #1938908).
+
+ -- Lucas Kanashiro <kanashiro@ubuntu.com>  Fri, 15 Oct 2021 17:12:23 -0300
+
 opengcs (0.3.4+dfsg2-0ubuntu6) hirsute; urgency=medium
 
   * d/p/0002-Simplify-ticks.patch: simplify ticks using a constant. This
diff -Nru opengcs-0.3.4+dfsg2/debian/patches/0003-Add-support-for-runc-1.0.x.patch opengcs-0.3.4+dfsg2/debian/patches/0003-Add-support-for-runc-1.0.x.patch
--- opengcs-0.3.4+dfsg2/debian/patches/0003-Add-support-for-runc-1.0.x.patch	1969-12-31 21:00:00.000000000 -0300
+++ opengcs-0.3.4+dfsg2/debian/patches/0003-Add-support-for-runc-1.0.x.patch	2021-10-15 17:12:23.000000000 -0300
@@ -0,0 +1,48 @@
+Description: Comply with libcontainer API changes in runc 1.0.x
+ docker and containerd upstream already fixed this but the embedded version in
+ opengcs is still affected.
+Forwarded: not-needed
+Author: Lucas Kanashiro <kanashiro@ubuntu.com>
+Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/hirsute/+source/opengcs/+bug/1938908
+Last-Updated: 2021-08-12
+
+--- a/containerd/sys/oom_unix.go
++++ b/containerd/sys/oom_unix.go
+@@ -7,7 +7,7 @@
+ 	"os"
+ 	"strconv"
+ 
+-	"github.com/opencontainers/runc/libcontainer/system"
++	"github.com/opencontainers/runc/libcontainer/userns"
+ )
+ 
+ // OOMScoreMaxKillable is the maximum score keeping the process killable by the oom killer
+@@ -22,7 +22,7 @@
+ 	}
+ 	defer f.Close()
+ 	if _, err = f.WriteString(strconv.Itoa(score)); err != nil {
+-		if os.IsPermission(err) && system.RunningInUserNS() {
++		if os.IsPermission(err) && userns.RunningInUserNS() {
+ 			return nil
+ 		}
+ 		return err
+--- a/docker/pkg/archive/archive_unix.go
++++ b/docker/pkg/archive/archive_unix.go
+@@ -11,7 +11,7 @@
+ 
+ 	"github.com/docker/docker/pkg/idtools"
+ 	"github.com/docker/docker/pkg/system"
+-	rsystem "github.com/opencontainers/runc/libcontainer/system"
++	"github.com/opencontainers/runc/libcontainer/userns"
+ 	"golang.org/x/sys/unix"
+ )
+ 
+@@ -88,7 +88,7 @@
+ // handleTarTypeBlockCharFifo is an OS-specific helper function used by
+ // createTarFile to handle the following types of header: Block; Char; Fifo
+ func handleTarTypeBlockCharFifo(hdr *tar.Header, path string) error {
+-	if rsystem.RunningInUserNS() {
++	if userns.RunningInUserNS() {
+ 		// cannot create a device if running in user namespace
+ 		return nil
+ 	}
diff -Nru opengcs-0.3.4+dfsg2/debian/patches/series opengcs-0.3.4+dfsg2/debian/patches/series
--- opengcs-0.3.4+dfsg2/debian/patches/series	2021-01-21 17:00:33.000000000 -0300
+++ opengcs-0.3.4+dfsg2/debian/patches/series	2021-10-15 17:12:23.000000000 -0300
@@ -1,2 +1,3 @@
 0001-Fix-int-overflow-on-32-bit-architectures.patch
 0002-Simplify-ticks.patch
+0003-Add-support-for-runc-1.0.x.patch