diff --git a/checkbox-snap/series_classic16/snap/snapcraft.yaml b/checkbox-snap/series_classic16/snap/snapcraft.yaml
index afb2eb25de..0592662d7e 100644
--- a/checkbox-snap/series_classic16/snap/snapcraft.yaml
+++ b/checkbox-snap/series_classic16/snap/snapcraft.yaml
@@ -72,4 +72,4 @@ parts:
       echo "This file is a workaround for a bug in the automated snap review tool" > $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "this only contains random bytes to pad the snap to 16kb" >> $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "see: https://bugs.launchpad.net/review-tools/+bug/2049093" >>  $SNAPCRAFT_PART_INSTALL/size_workaround
-      cat /dev/urandom | head -c 16384 >> $SNAPCRAFT_PART_INSTALL/size_workaround
+      head -c 16384 /dev/urandom >> $SNAPCRAFT_PART_INSTALL/size_workaround
diff --git a/checkbox-snap/series_classic18/snap/snapcraft.yaml b/checkbox-snap/series_classic18/snap/snapcraft.yaml
index 95f2fd278c..208dc8673c 100644
--- a/checkbox-snap/series_classic18/snap/snapcraft.yaml
+++ b/checkbox-snap/series_classic18/snap/snapcraft.yaml
@@ -75,4 +75,4 @@ parts:
       echo "This file is a workaround for a bug in the automated snap review tool" > $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "this only contains random bytes to pad the snap to 16kb" >> $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "see: https://bugs.launchpad.net/review-tools/+bug/2049093" >>  $SNAPCRAFT_PART_INSTALL/size_workaround
-      cat /dev/urandom | head -c 16384 >> $SNAPCRAFT_PART_INSTALL/size_workaround
+      head -c 16384 /dev/urandom >> $SNAPCRAFT_PART_INSTALL/size_workaround
diff --git a/checkbox-snap/series_classic20/snap/snapcraft.yaml b/checkbox-snap/series_classic20/snap/snapcraft.yaml
index 52640b24e9..67f54c7cf4 100644
--- a/checkbox-snap/series_classic20/snap/snapcraft.yaml
+++ b/checkbox-snap/series_classic20/snap/snapcraft.yaml
@@ -75,4 +75,4 @@ parts:
       echo "This file is a workaround for a bug in the automated snap review tool" > $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "this only contains random bytes to pad the snap to 16kb" >> $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "see: https://bugs.launchpad.net/review-tools/+bug/2049093" >>  $SNAPCRAFT_PART_INSTALL/size_workaround
-      cat /dev/urandom | head -c 16384 >> $SNAPCRAFT_PART_INSTALL/size_workaround
+      head -c 16384 /dev/urandom >> $SNAPCRAFT_PART_INSTALL/size_workaround
diff --git a/checkbox-snap/series_classic22/snap/snapcraft.yaml b/checkbox-snap/series_classic22/snap/snapcraft.yaml
index 06ae33b485..9380fbe33e 100644
--- a/checkbox-snap/series_classic22/snap/snapcraft.yaml
+++ b/checkbox-snap/series_classic22/snap/snapcraft.yaml
@@ -77,4 +77,4 @@ parts:
       echo "This file is a workaround for a bug in the automated snap review tool" > $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "this only contains random bytes to pad the snap to 16kb" >> $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "see: https://bugs.launchpad.net/review-tools/+bug/2049093" >>  $SNAPCRAFT_PART_INSTALL/size_workaround
-      cat /dev/urandom | head -c 16384 >> $SNAPCRAFT_PART_INSTALL/size_workaround
+      head -c 16384 /dev/urandom >> $SNAPCRAFT_PART_INSTALL/size_workaround
diff --git a/checkbox-snap/series_uc16/snap/snapcraft.yaml b/checkbox-snap/series_uc16/snap/snapcraft.yaml
index 4b933a4052..87c1411f0e 100644
--- a/checkbox-snap/series_uc16/snap/snapcraft.yaml
+++ b/checkbox-snap/series_uc16/snap/snapcraft.yaml
@@ -118,4 +118,4 @@ parts:
       echo "This file is a workaround for a bug in the automated snap review tool" > $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "this only contains random bytes to pad the snap to 16kb" >> $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "see: https://bugs.launchpad.net/review-tools/+bug/2049093" >>  $SNAPCRAFT_PART_INSTALL/size_workaround
-      cat /dev/urandom | head -c 16384 >> $SNAPCRAFT_PART_INSTALL/size_workaround
+      head -c 16384 /dev/urandom >> $SNAPCRAFT_PART_INSTALL/size_workaround
diff --git a/checkbox-snap/series_uc18/snap/snapcraft.yaml b/checkbox-snap/series_uc18/snap/snapcraft.yaml
index 5177878bd5..4210759b17 100644
--- a/checkbox-snap/series_uc18/snap/snapcraft.yaml
+++ b/checkbox-snap/series_uc18/snap/snapcraft.yaml
@@ -122,4 +122,4 @@ parts:
       echo "This file is a workaround for a bug in the automated snap review tool" > $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "this only contains random bytes to pad the snap to 16kb" >> $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "see: https://bugs.launchpad.net/review-tools/+bug/2049093" >>  $SNAPCRAFT_PART_INSTALL/size_workaround
-      cat /dev/urandom | head -c 16384 >> $SNAPCRAFT_PART_INSTALL/size_workaround
+      head -c 16384 /dev/urandom >> $SNAPCRAFT_PART_INSTALL/size_workaround
diff --git a/checkbox-snap/series_uc20/snap/snapcraft.yaml b/checkbox-snap/series_uc20/snap/snapcraft.yaml
index 194b6be7b7..d4e49364ba 100644
--- a/checkbox-snap/series_uc20/snap/snapcraft.yaml
+++ b/checkbox-snap/series_uc20/snap/snapcraft.yaml
@@ -122,4 +122,4 @@ parts:
       echo "This file is a workaround for a bug in the automated snap review tool" > $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "this only contains random bytes to pad the snap to 16kb" >> $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "see: https://bugs.launchpad.net/review-tools/+bug/2049093" >>  $SNAPCRAFT_PART_INSTALL/size_workaround
-      cat /dev/urandom | head -c 16384 >> $SNAPCRAFT_PART_INSTALL/size_workaround
+      head -c 16384 /dev/urandom >> $SNAPCRAFT_PART_INSTALL/size_workaround
diff --git a/checkbox-snap/series_uc22/snap/snapcraft.yaml b/checkbox-snap/series_uc22/snap/snapcraft.yaml
index 432d20e275..6f3afa161a 100644
--- a/checkbox-snap/series_uc22/snap/snapcraft.yaml
+++ b/checkbox-snap/series_uc22/snap/snapcraft.yaml
@@ -124,4 +124,4 @@ parts:
       echo "This file is a workaround for a bug in the automated snap review tool" > $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "this only contains random bytes to pad the snap to 16kb" >> $SNAPCRAFT_PART_INSTALL/size_workaround
       echo "see: https://bugs.launchpad.net/review-tools/+bug/2049093" >>  $SNAPCRAFT_PART_INSTALL/size_workaround
-      cat /dev/urandom | head -c 16384 >> $SNAPCRAFT_PART_INSTALL/size_workaround
+      head -c 16384 /dev/urandom >> $SNAPCRAFT_PART_INSTALL/size_workaround