diff --git a/man7/cgroups.7 b/man7/cgroups.7
index fac3e1581..b76e64616 100644
--- a/man7/cgroups.7
+++ b/man7/cgroups.7
@@ -1214,7 +1214,7 @@ controllers: these controllers support thread-granularity for
 resource control and can be enabled inside threaded subtrees,
 with the result that the corresponding controller-interface files
 appear inside the cgroups in the threaded subtree.
-As at Linux 4.15, the following controllers are threaded:
+As at Linux 4.19, the following controllers are threaded:
 .IR cpu ,
 .IR perf_event ,
 and
@@ -1554,7 +1554,7 @@ controller to be placed as high as possible in the hierarchy,
 so as to minimize the (small) cost of traversing the cgroup hierarchy.
 .\"
 .SS The cgroups v2 """cpu""" controller and realtime threads
-As at Linux 4.15, the cgroups v2
+As at Linux 4.19, the cgroups v2
 .I cpu
 controller does not support control of realtime threads
 (specifically threads scheduled under any of the policies