diff --git a/system/lib.py b/system/lib.py
index 128b0be3..a2e14d0e 100644
--- a/system/lib.py
+++ b/system/lib.py
@@ -275,6 +275,7 @@ class BaseTest(object):
         if self.fixtureGpg:
             self.run_cmd([self.gpgFinder.gpg, "--no-default-keyring", "--trust-model", "always", "--batch", "--keyring", "aptlytest.gpg", "--import"] +
                          [os.path.join(os.path.dirname(inspect.getsourcefile(BaseTest)), "files", key) for key in self.fixtureGpgKeys])
+            self.run_cmd(["chmod", "400", "/home/runner/.gnupg/aptlytest.gpg"])
 
         if hasattr(self, "fixtureCmds"):
             for cmd in self.fixtureCmds:
diff --git a/system/t04_mirror/CreateMirror11Test_gold b/system/t04_mirror/CreateMirror11Test_gold
index c2245357..2b5f5051 100644
--- a/system/t04_mirror/CreateMirror11Test_gold
+++ b/system/t04_mirror/CreateMirror11Test_gold
@@ -4,7 +4,6 @@ Retrying 0 http://repo.aptly.info/system-tests/archive.debian.org/debian-archive
 Download Error: http://repo.aptly.info/system-tests/archive.debian.org/debian-archive/debian/dists/stretch/InRelease
 Downloading: http://repo.aptly.info/system-tests/archive.debian.org/debian-archive/debian/dists/stretch/Release
 Downloading: http://repo.aptly.info/system-tests/archive.debian.org/debian-archive/debian/dists/stretch/Release.gpg
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
 gpgv: Signature made Sat Aug 14 07:43:24 2021 UTC
 gpgv:                using RSA key 16E90B3FDF65EDE3AA7F323C04EE7237B7D453EC
 gpgv: Good signature from "Debian Archive Automatic Signing Key (9/stretch) <ftpmaster@debian.org>"
diff --git a/system/t04_mirror/CreateMirror14Test_gold b/system/t04_mirror/CreateMirror14Test_gold
index e470fa12..6ba64199 100644
--- a/system/t04_mirror/CreateMirror14Test_gold
+++ b/system/t04_mirror/CreateMirror14Test_gold
@@ -1,5 +1,4 @@
 Downloading: http://repo.aptly.info/system-tests/cloud.r-project.org/bin/linux/debian/bullseye-cran40/InRelease
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
 gpgv: Signature made Thu Nov  2 07:43:52 2023 UTC
 gpgv:                using RSA key 7BA040A510E4E66ED3743EC1B8F25A8A73EACF41
 gpgv: Good signature from "Johannes Ranke <johannes.ranke@jrwb.de>"
diff --git a/system/t04_mirror/CreateMirror19Test_gold b/system/t04_mirror/CreateMirror19Test_gold
index fb9c3082..4ae30b74 100644
--- a/system/t04_mirror/CreateMirror19Test_gold
+++ b/system/t04_mirror/CreateMirror19Test_gold
@@ -1,5 +1,4 @@
 Downloading: http://repo.aptly.info/system-tests/archive.debian.org/debian-security/dists/stretch/updates/InRelease
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
 gpgv: Signature made Sat Feb 18 04:22:45 2023 UTC
 gpgv:                using RSA key 379483D8B60160B155B372DDAA8E81B4331F7F50
 gpgv: Good signature from "Debian Security Archive Automatic Signing Key (9/stretch) <ftpmaster@debian.org>"
diff --git a/system/t04_mirror/CreateMirror21Test_gold b/system/t04_mirror/CreateMirror21Test_gold
index 9296b6ba..f53413fc 100644
--- a/system/t04_mirror/CreateMirror21Test_gold
+++ b/system/t04_mirror/CreateMirror21Test_gold
@@ -4,7 +4,6 @@ Retrying 0 http://repo.aptly.info/system-tests/pkg.jenkins.io/debian-stable/bina
 Download Error: http://repo.aptly.info/system-tests/pkg.jenkins.io/debian-stable/binary/InRelease
 Downloading: http://repo.aptly.info/system-tests/pkg.jenkins.io/debian-stable/binary/Release
 Downloading: http://repo.aptly.info/system-tests/pkg.jenkins.io/debian-stable/binary/Release.gpg
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
 gpgv: Signature made Wed Dec 13 17:19:55 2023 UTC
 gpgv:                using RSA key 63667EE74BBA1F0A08A698725BA31D57EF5975CA
 gpgv: Good signature from "Jenkins Project <jenkinsci-board@googlegroups.com>"
diff --git a/system/t04_mirror/CreateMirror24Test_gold b/system/t04_mirror/CreateMirror24Test_gold
index 0d4aa3e4..4986d89b 100644
--- a/system/t04_mirror/CreateMirror24Test_gold
+++ b/system/t04_mirror/CreateMirror24Test_gold
@@ -1,5 +1,4 @@
 Downloading: http://repo.aptly.info/system-tests/archive.debian.org/debian-security/dists/stretch/updates/InRelease
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
 gpgv: Signature made Sat Feb 18 04:22:45 2023 UTC
 gpgv:                using RSA key 379483D8B60160B155B372DDAA8E81B4331F7F50
 gpgv: Good signature from "Debian Security Archive Automatic Signing Key (9/stretch) <ftpmaster@debian.org>"
diff --git a/system/t04_mirror/CreateMirror32Test_gold b/system/t04_mirror/CreateMirror32Test_gold
index 21cedc89..74b4fd17 100644
--- a/system/t04_mirror/CreateMirror32Test_gold
+++ b/system/t04_mirror/CreateMirror32Test_gold
@@ -4,7 +4,6 @@ Retrying 0 http://repo.aptly.info/system-tests/archive.debian.org/debian-archive
 Download Error: http://repo.aptly.info/system-tests/archive.debian.org/debian-archive/debian/dists/stretch/InRelease
 Downloading: http://repo.aptly.info/system-tests/archive.debian.org/debian-archive/debian/dists/stretch/Release
 Downloading: http://repo.aptly.info/system-tests/archive.debian.org/debian-archive/debian/dists/stretch/Release.gpg
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
 gpgv: Good signature from "Debian Archive Automatic Signing Key (9/stretch) <ftpmaster@debian.org>"
 gpgv: Good signature from "Debian Archive Automatic Signing Key (10/buster) <ftpmaster@debian.org>"
 gpgv: Good signature from "Debian Archive Automatic Signing Key (11/bullseye) <ftpmaster@debian.org>"
diff --git a/system/t04_mirror/CreateMirror9Test_gold b/system/t04_mirror/CreateMirror9Test_gold
index 54daacff..be1879e1 100644
--- a/system/t04_mirror/CreateMirror9Test_gold
+++ b/system/t04_mirror/CreateMirror9Test_gold
@@ -1,5 +1,4 @@
 Downloading: http://repo.aptly.info/system-tests/archive.debian.org/debian-archive/debian/dists/stretch-backports/InRelease
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
 gpgv: Signature made Thu Mar 30 14:21:34 2023 UTC
 gpgv:                using RSA key 0146DC6D4A0B2914BDED34DB648ACFD622F3D138
 gpgv: Good signature from "Debian Archive Automatic Signing Key (10/buster) <ftpmaster@debian.org>"
diff --git a/system/t04_mirror/UpdateMirror10Test_gold b/system/t04_mirror/UpdateMirror10Test_gold
index e404b6bd..fa0f41f2 100644
--- a/system/t04_mirror/UpdateMirror10Test_gold
+++ b/system/t04_mirror/UpdateMirror10Test_gold
@@ -22,5 +22,4 @@ Mirror `flat-src` has been successfully updated.
 Packages filtered: 110 -> 11.
 gpgv:                using RSA key 7BA040A510E4E66ED3743EC1B8F25A8A73EACF41
 gpgv: Good signature from "Johannes Ranke <johannes.ranke@jrwb.de>"
-gpgv: Signature made Thu Nov  2 07:43:52 2023 UTC
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
\ No newline at end of file
+gpgv: Signature made Thu Nov  2 07:43:52 2023 UTC
\ No newline at end of file
diff --git a/system/t04_mirror/UpdateMirror11Test_gold b/system/t04_mirror/UpdateMirror11Test_gold
index 817e992a..24f61552 100644
--- a/system/t04_mirror/UpdateMirror11Test_gold
+++ b/system/t04_mirror/UpdateMirror11Test_gold
@@ -28,5 +28,4 @@ gpgv: Good signature from "Debian Stable Release Key (9/stretch) <debian-release
 gpgv: Signature made Sat Aug 14 07:43:24 2021 UTC
 gpgv: Signature made Sat Aug 14 07:43:25 2021 UTC
 gpgv: Signature made Sat Aug 14 08:26:43 2021 UTC
-gpgv: Signature made Sat Aug 14 08:46:19 2021 UTC
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
\ No newline at end of file
+gpgv: Signature made Sat Aug 14 08:46:19 2021 UTC
\ No newline at end of file
diff --git a/system/t04_mirror/UpdateMirror12Test_gold b/system/t04_mirror/UpdateMirror12Test_gold
index 2146e9ce..eff42e76 100644
--- a/system/t04_mirror/UpdateMirror12Test_gold
+++ b/system/t04_mirror/UpdateMirror12Test_gold
@@ -52,5 +52,4 @@ gpgv: Good signature from "Debian Stable Release Key (9/stretch) <debian-release
 gpgv: Signature made Sat Aug 14 07:43:24 2021 UTC
 gpgv: Signature made Sat Aug 14 07:43:25 2021 UTC
 gpgv: Signature made Sat Aug 14 08:26:43 2021 UTC
-gpgv: Signature made Sat Aug 14 08:46:19 2021 UTC
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
\ No newline at end of file
+gpgv: Signature made Sat Aug 14 08:46:19 2021 UTC
\ No newline at end of file
diff --git a/system/t04_mirror/UpdateMirror19Test_gold b/system/t04_mirror/UpdateMirror19Test_gold
index 25e3c05d..fcf7c33c 100644
--- a/system/t04_mirror/UpdateMirror19Test_gold
+++ b/system/t04_mirror/UpdateMirror19Test_gold
@@ -4,7 +4,6 @@ Retrying 0 http://repo.aptly.info/system-tests/packages.pagerduty.com/pdagent/de
 Download Error: http://repo.aptly.info/system-tests/packages.pagerduty.com/pdagent/deb/InRelease
 Downloading: http://repo.aptly.info/system-tests/packages.pagerduty.com/pdagent/deb/Release
 Downloading: http://repo.aptly.info/system-tests/packages.pagerduty.com/pdagent/deb/Release.gpg
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
 gpgv: Signature made Tue Jun 30 15:56:03 2020 UTC
 gpgv:                using RSA key AE0396CFF8253540
 gpgv: Good signature from "Package Maintainer (PagerDuty, Inc.) <packages@pagerduty.com>"
diff --git a/system/t04_mirror/UpdateMirror23Test_gold b/system/t04_mirror/UpdateMirror23Test_gold
index 051e202e..5e6157c7 100644
--- a/system/t04_mirror/UpdateMirror23Test_gold
+++ b/system/t04_mirror/UpdateMirror23Test_gold
@@ -39,5 +39,4 @@ gpgv: Good signature from "Debian Stable Release Key (9/stretch) <debian-release
 gpgv: Signature made Sat Aug 14 07:43:24 2021 UTC
 gpgv: Signature made Sat Aug 14 07:43:25 2021 UTC
 gpgv: Signature made Sat Aug 14 08:26:43 2021 UTC
-gpgv: Signature made Sat Aug 14 08:46:19 2021 UTC
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
\ No newline at end of file
+gpgv: Signature made Sat Aug 14 08:46:19 2021 UTC
\ No newline at end of file
diff --git a/system/t04_mirror/UpdateMirror24Test_gold b/system/t04_mirror/UpdateMirror24Test_gold
index 954075a6..e8ec96b9 100644
--- a/system/t04_mirror/UpdateMirror24Test_gold
+++ b/system/t04_mirror/UpdateMirror24Test_gold
@@ -68,6 +68,4 @@ gpgv: Good signature from "Ubuntu Archive Automatic Signing Key <ftpmaster@ubunt
 gpgv: Signature made Thu May  8 14:20:33 2014 UTC
 gpgv: Signature made Thu May  8 14:20:33 2014 UTC
 gpgv: Signature made Tue Apr 15 22:05:21 2014 UTC
-gpgv: Signature made Tue Apr 15 22:05:21 2014 UTC
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
\ No newline at end of file
+gpgv: Signature made Tue Apr 15 22:05:21 2014 UTC
\ No newline at end of file
diff --git a/system/t04_mirror/UpdateMirror25Test_gold b/system/t04_mirror/UpdateMirror25Test_gold
index cb24f064..41b197ca 100644
--- a/system/t04_mirror/UpdateMirror25Test_gold
+++ b/system/t04_mirror/UpdateMirror25Test_gold
@@ -19,5 +19,4 @@ gpgv:                using RSA key 5237CEEEF212F3D51C74ABE0112695A0E562B32A
 gpgv: Good signature from "Debian Security Archive Automatic Signing Key (10/buster) <ftpmaster@debian.org>"
 gpgv: Good signature from "Debian Security Archive Automatic Signing Key (9/stretch) <ftpmaster@debian.org>"
 gpgv: Signature made Sat Feb 18 04:22:45 2023 UTC
-gpgv: Signature made Sat Feb 18 04:22:45 2023 UTC
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
\ No newline at end of file
+gpgv: Signature made Sat Feb 18 04:22:45 2023 UTC
\ No newline at end of file
diff --git a/system/t04_mirror/UpdateMirror7Test_gold b/system/t04_mirror/UpdateMirror7Test_gold
index 4f222c65..14090853 100644
--- a/system/t04_mirror/UpdateMirror7Test_gold
+++ b/system/t04_mirror/UpdateMirror7Test_gold
@@ -97,5 +97,4 @@ Downloading: http://repo.aptly.info/system-tests/cloud.r-project.org/bin/linux/d
 Mirror `flat` has been successfully updated.
 gpgv:                using RSA key 7BA040A510E4E66ED3743EC1B8F25A8A73EACF41
 gpgv: Good signature from "Johannes Ranke <johannes.ranke@jrwb.de>"
-gpgv: Signature made Thu Nov  2 07:43:52 2023 UTC
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
\ No newline at end of file
+gpgv: Signature made Thu Nov  2 07:43:52 2023 UTC
\ No newline at end of file
diff --git a/system/t04_mirror/UpdateMirror8Test_gold b/system/t04_mirror/UpdateMirror8Test_gold
index 3b370e10..30dbccb9 100644
--- a/system/t04_mirror/UpdateMirror8Test_gold
+++ b/system/t04_mirror/UpdateMirror8Test_gold
@@ -4,7 +4,6 @@ Retrying 0 http://repo.aptly.info/system-tests/ppa.launchpad.net/gladky-anton/gn
 Download Error: http://repo.aptly.info/system-tests/ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/InRelease
 Downloading: http://repo.aptly.info/system-tests/ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/Release
 Downloading: http://repo.aptly.info/system-tests/ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/Release.gpg
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
 gpgv: Signature made Mon Oct 22 13:19:50 2012 UTC
 gpgv:                using RSA key A5279A973B1F56C0
 gpgv: Good signature from "Launchpad sim"
diff --git a/system/t04_mirror/UpdateMirror9Test_gold b/system/t04_mirror/UpdateMirror9Test_gold
index 2eabc2ea..1d898874 100644
--- a/system/t04_mirror/UpdateMirror9Test_gold
+++ b/system/t04_mirror/UpdateMirror9Test_gold
@@ -160,5 +160,4 @@ Downloading: http://repo.aptly.info/system-tests/cloud.r-project.org/bin/linux/d
 Mirror `flat-src` has been successfully updated.
 gpgv:                using RSA key 7BA040A510E4E66ED3743EC1B8F25A8A73EACF41
 gpgv: Good signature from "Johannes Ranke <johannes.ranke@jrwb.de>"
-gpgv: Signature made Thu Nov  2 07:43:52 2023 UTC
-gpgv: can't allocate lock for '/home/runner/.gnupg/aptlytest.gpg'
\ No newline at end of file
+gpgv: Signature made Thu Nov  2 07:43:52 2023 UTC
\ No newline at end of file