diff --git a/r_tutorials/w09-R_tutorial.html b/r_tutorials/w09-R_tutorial.html
index 90010e4..1facba5 100644
--- a/r_tutorials/w09-R_tutorial.html
+++ b/r_tutorials/w09-R_tutorial.html
@@ -12,7 +12,7 @@
 <meta name="author" content="Aaron Shaw and Jeremy Foote" />
 
 
-<title>Week 7 R tutorial</title>
+<title>Week 9 R tutorial</title>
 
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@@ -1530,7 +1530,7 @@ div.tocify {
 
 
 
-<h1 class="title toc-ignore">Week 7 R tutorial</h1>
+<h1 class="title toc-ignore">Week 9 R tutorial</h1>
 <h4 class="author">Aaron Shaw and Jeremy Foote</h4>
 <h4 class="date">November 8, 2020 (revised)</h4>
 
diff --git a/r_tutorials/w09-R_tutorial.pdf b/r_tutorials/w09-R_tutorial.pdf
index 9d88f4d..18ffa80 100644
Binary files a/r_tutorials/w09-R_tutorial.pdf and b/r_tutorials/w09-R_tutorial.pdf differ
diff --git a/r_tutorials/w09-R_tutorial.rmd b/r_tutorials/w09-R_tutorial.rmd
index 7abcaad..3436011 100644
--- a/r_tutorials/w09-R_tutorial.rmd
+++ b/r_tutorials/w09-R_tutorial.rmd
@@ -1,5 +1,5 @@
 ---
-title: "Week 7 R tutorial"
+title: "Week 9 R tutorial"
 author: "Aaron Shaw and Jeremy Foote"
 date: "November 8, 2020 (revised)"
 output: