diff --git a/auditbeat/tests/system/requirements.txt b/auditbeat/tests/system/requirements.txt
index 553625fe698..c2399b66f80 100644
--- a/auditbeat/tests/system/requirements.txt
+++ b/auditbeat/tests/system/requirements.txt
@@ -1 +1 @@
-protobuf==3.19.4 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
+protobuf==3.19.5 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
diff --git a/dev-tools/requirements.txt b/dev-tools/requirements.txt
index e9d917548f1..f69927dbe3c 100644
--- a/dev-tools/requirements.txt
+++ b/dev-tools/requirements.txt
@@ -1,3 +1,3 @@
 elasticsearch
 requests
-protobuf==3.19.4 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
+protobuf==3.19.5 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
diff --git a/heartbeat/tests/system/requirements.txt b/heartbeat/tests/system/requirements.txt
index 553625fe698..c2399b66f80 100644
--- a/heartbeat/tests/system/requirements.txt
+++ b/heartbeat/tests/system/requirements.txt
@@ -1 +1 @@
-protobuf==3.19.4 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
+protobuf==3.19.5 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
diff --git a/metricbeat/module/kubernetes/_meta/terraform/eks/requirements.txt b/metricbeat/module/kubernetes/_meta/terraform/eks/requirements.txt
index 57d386ba6a0..7402ff16caa 100644
--- a/metricbeat/module/kubernetes/_meta/terraform/eks/requirements.txt
+++ b/metricbeat/module/kubernetes/_meta/terraform/eks/requirements.txt
@@ -10,4 +10,4 @@ rsa==4.7.2
 s3transfer==0.3.3
 six==1.14.0
 urllib3==1.26.5
-protobuf==3.19.4 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
+protobuf==3.19.5 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
diff --git a/metricbeat/module/system/test_system.py b/metricbeat/module/system/test_system.py
index b1c21d698ff..de113e5e4b0 100644
--- a/metricbeat/module/system/test_system.py
+++ b/metricbeat/module/system/test_system.py
@@ -258,7 +258,7 @@ def test_diskio(self):
                     self.assertCountEqual(
                         SYSTEM_DISK_HOST_FIELDS, host_disk.keys())
 
-    @unittest.skipUnless(re.match("(?i)win|linux|darwin|freebsd|openbsd", sys.platform), "os")
+    @unittest.skipUnless(re.match("(?i)win|linux|freebsd|openbsd", sys.platform), "os")
     def test_filesystem(self):
         """
         Test system/filesystem output.
diff --git a/metricbeat/tests/system/requirements.txt b/metricbeat/tests/system/requirements.txt
index 711013bb2f8..98713863fc0 100644
--- a/metricbeat/tests/system/requirements.txt
+++ b/metricbeat/tests/system/requirements.txt
@@ -1,4 +1,4 @@
 kafka-python==1.4.3
 elasticsearch==7.1.0
 semver==2.8.1
-protobuf==3.19.4 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
+protobuf==3.19.5 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
diff --git a/packetbeat/tests/system/gen/memcache/requirements.txt b/packetbeat/tests/system/gen/memcache/requirements.txt
index 346c9010386..1666df74b64 100644
--- a/packetbeat/tests/system/gen/memcache/requirements.txt
+++ b/packetbeat/tests/system/gen/memcache/requirements.txt
@@ -1,2 +1,2 @@
 pylibmc
-protobuf==3.19.4 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
+protobuf==3.19.5 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
diff --git a/x-pack/functionbeat/tests/system/requirements.txt b/x-pack/functionbeat/tests/system/requirements.txt
index 553625fe698..c2399b66f80 100644
--- a/x-pack/functionbeat/tests/system/requirements.txt
+++ b/x-pack/functionbeat/tests/system/requirements.txt
@@ -1 +1 @@
-protobuf==3.19.4 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051
+protobuf==3.19.5 #Temporary change because of protobuf new version bug: https://github.com/protocolbuffers/protobuf/issues/10051