diff --git a/inst/ShinyGR/www/tab_about.md b/inst/ShinyGR/www/tab_about.md
index 2901fcdfc08af86b7ea554d16033d9aa89fa929c..65a0001dd16478b741450567173c686461e3f573 100644
--- a/inst/ShinyGR/www/tab_about.md
+++ b/inst/ShinyGR/www/tab_about.md
@@ -1,8 +1,8 @@
 ---
 output: 
   html_document: 
-    keep_md: yes
-    self_contained: yes
+    keep_md: true
+    self_contained: true
 ---
 
 
diff --git a/inst/ShinyGR/www/tab_about.rmd b/inst/ShinyGR/www/tab_about.rmd
index 94484f46e70870877f793ada24bc30e55f2e663e..4149612d059cae5d9d987e9098cfce6a48213a2e 100644
--- a/inst/ShinyGR/www/tab_about.rmd
+++ b/inst/ShinyGR/www/tab_about.rmd
@@ -1,8 +1,8 @@
 ---
 output: 
   html_document: 
-    keep_md: yes
-    self_contained: yes
+    keep_md: true
+    self_contained: true
 ---
 
 
diff --git a/inst/ShinyGR/www/tab_fun.md b/inst/ShinyGR/www/tab_fun.md
index 094509cfe45c24f93b6e08e5f78a2e355fc1d640..2889ca30e3bc4a249df8fc3135d8c6c485d2430a 100644
--- a/inst/ShinyGR/www/tab_fun.md
+++ b/inst/ShinyGR/www/tab_fun.md
@@ -1,8 +1,8 @@
 ---
 output: 
   html_document: 
-    keep_md: yes
-    self_contained: yes
+    keep_md: true
+    self_contained: true
 ---
 
 
diff --git a/inst/ShinyGR/www/tab_fun.rmd b/inst/ShinyGR/www/tab_fun.rmd
index 7c06d2acabd567eef7d5b99cbabb0db98c9b6ce4..97ed59d307362aee839b4939148304fdcaa913e6 100644
--- a/inst/ShinyGR/www/tab_fun.rmd
+++ b/inst/ShinyGR/www/tab_fun.rmd
@@ -1,8 +1,8 @@
 ---
 output: 
   html_document: 
-    keep_md: yes
-    self_contained: yes
+    keep_md: true
+    self_contained: true
 ---