diff --git a/sample_rules/basic_rules.yaml b/sample_rules/basic_rules.yaml
index 4690472..4e4e3c8 100644
--- a/sample_rules/basic_rules.yaml
+++ b/sample_rules/basic_rules.yaml
@@ -128,7 +128,7 @@
             - "_clear_packaging_caches_and_temporary_package_downloads"
         - 
           label: "yum_update_all"
-          regex: /yum(.+update all|.+upgrade|.+update)/
+          regex: /yum([ \t]+update all|[ \t]+upgrade|[ \t]+update)/
           level: "info"
           message: "updating the entire base image may add unnecessary size to the container"
           description: "update the entire base image may add unnecessary size to the container"
diff --git a/sample_rules/basic_rules_atomic.yaml b/sample_rules/basic_rules_atomic.yaml
index a72defe..9b3dc95 100644
--- a/sample_rules/basic_rules_atomic.yaml
+++ b/sample_rules/basic_rules_atomic.yaml
@@ -128,7 +128,7 @@
             - "_clear_packaging_caches_and_temporary_package_downloads"
         - 
           label: "yum_update_all"
-          regex: /yum(.+update all|.+upgrade|.+update|\.config)/
+          regex: /yum([ \t]+update all|[ \t]+upgrade|[ \t]+update|\.config)/
           level: "info"
           message: "updating the entire base image may add unnecessary size to the container"
           description: "update the entire base image may add unnecessary size to the container"
diff --git a/sample_rules/default_rules.yaml b/sample_rules/default_rules.yaml
index 47c5edd..3b64a4d 100644
--- a/sample_rules/default_rules.yaml
+++ b/sample_rules/default_rules.yaml
@@ -110,7 +110,7 @@
             - "_clear_packaging_caches_and_temporary_package_downloads"
         - 
           label: "yum_update_all"
-          regex: /yum(.+update all|.+upgrade|.+update)/
+          regex: /yum([ \t]+update all|[ \t]+upgrade|[ \t]+update)/
           level: "info"
           message: "updating the entire base image may add unnecessary size to the container"
           description: "update the entire base image may add unnecessary size to the container"
diff --git a/sample_rules/modules.yaml b/sample_rules/modules.yaml
index d22de76..90fa884 100644
--- a/sample_rules/modules.yaml
+++ b/sample_rules/modules.yaml
@@ -131,7 +131,7 @@
             - "_clear_packaging_caches_and_temporary_package_downloads"
         - 
           label: "yum_update_all"
-          regex: /yum(.+update all|.+upgrade|.+update|\.config)/
+          regex: /yum([ \t]+update all|[ \t]+upgrade|[ \t]+update|\.config)/
           level: "info"
           message: "updating the entire base image may add unnecessary size to the container"
           description: "update the entire base image may add unnecessary size to the container"
diff --git a/sample_rules/osbs.yaml b/sample_rules/osbs.yaml
index 52d139c..bcfd12b 100644
--- a/sample_rules/osbs.yaml
+++ b/sample_rules/osbs.yaml
@@ -115,7 +115,7 @@
             - "_clear_packaging_caches_and_temporary_package_downloads"
         - 
           label: "yum_update_all"
-          regex: /yum(.+update all|.+upgrade|.+update|\.config)/
+          regex: /yum([ \t]+update all|[ \t]+upgrade|[ \t]+update|\.config)/
           level: "info"
           message: "updating the entire base image may add unnecessary size to the container"
           description: "update the entire base image may add unnecessary size to the container"