diff --git a/renv/activate.R b/renv/activate.R
index c360bf2..0eb5108 100644
--- a/renv/activate.R
+++ b/renv/activate.R
@@ -2,7 +2,7 @@
 local({
 
   # the requested version of renv
-  version <- "1.0.9"
+  version <- "1.0.11"
   attr(version, "sha") <- NULL
 
   # the project directory
@@ -368,8 +368,7 @@ local({
       quiet    = TRUE
     )
   
-    if ("headers" %in% names(formals(utils::download.file)))
-    {
+    if ("headers" %in% names(formals(utils::download.file))) {
       headers <- renv_bootstrap_download_custom_headers(url)
       if (length(headers) && is.character(headers))
         args$headers <- headers
@@ -457,9 +456,8 @@ local({
   
         # add custom headers if available -- note that
         # utils::available.packages() will pass this to download.file()
-        if ("headers" %in% names(formals(utils::download.file)))
-        {
-          headers <- renv_bootstrap_download_custom_headers(url)
+        if ("headers" %in% names(formals(utils::download.file))) {
+          headers <- renv_bootstrap_download_custom_headers(repos)
           if (length(headers) && is.character(headers))
             args$headers <- headers
         }
diff --git a/renv/profiles/lesson-requirements/renv.lock b/renv/profiles/lesson-requirements/renv.lock
index 6f9fa77..42a989f 100644
--- a/renv/profiles/lesson-requirements/renv.lock
+++ b/renv/profiles/lesson-requirements/renv.lock
@@ -379,7 +379,7 @@
     },
     "GenomicRanges": {
       "Package": "GenomicRanges",
-      "Version": "1.56.1",
+      "Version": "1.56.2",
       "Source": "Bioconductor",
       "Repository": "Bioconductor 3.19",
       "Requirements": [
@@ -394,7 +394,7 @@
         "stats4",
         "utils"
       ],
-      "Hash": "a3c822ef3c124828e25e7a9611beeb50"
+      "Hash": "fecd026026c4d45e3b57eee97bbbba92"
     },
     "IRanges": {
       "Package": "IRanges",
@@ -428,7 +428,7 @@
     },
     "Matrix": {
       "Package": "Matrix",
-      "Version": "1.7-0",
+      "Version": "1.7-1",
       "Source": "Repository",
       "Repository": "CRAN",
       "Requirements": [
@@ -441,7 +441,7 @@
         "stats",
         "utils"
       ],
-      "Hash": "1920b2f11133b12350024297d8a4ff4a"
+      "Hash": "5122bb14d8736372411f955e1b16bc8a"
     },
     "MatrixGenerics": {
       "Package": "MatrixGenerics",
@@ -507,14 +507,14 @@
     },
     "Rcpp": {
       "Package": "Rcpp",
-      "Version": "1.0.13",
+      "Version": "1.0.13-1",
       "Source": "Repository",
       "Repository": "CRAN",
       "Requirements": [
         "methods",
         "utils"
       ],
-      "Hash": "f27411eb6d9c3dada5edd444b8416675"
+      "Hash": "6b868847b365672d6c1677b1608da9ed"
     },
     "RefManageR": {
       "Package": "RefManageR",
@@ -716,13 +716,13 @@
     },
     "askpass": {
       "Package": "askpass",
-      "Version": "1.2.0",
+      "Version": "1.2.1",
       "Source": "Repository",
       "Repository": "CRAN",
       "Requirements": [
         "sys"
       ],
-      "Hash": "cad6cf7f1d5f6e906700b9d3e718c796"
+      "Hash": "c39f4155b3ceb1a9a2799d700fbd4b6a"
     },
     "backports": {
       "Package": "backports",
@@ -801,10 +801,10 @@
     },
     "bitops": {
       "Package": "bitops",
-      "Version": "1.0-8",
+      "Version": "1.0-9",
       "Source": "Repository",
       "Repository": "CRAN",
-      "Hash": "da69e6b6f8feebec0827205aad3fdbd8"
+      "Hash": "d972ef991d58c19e6efa71b21f5e144b"
     },
     "blob": {
       "Package": "blob",
@@ -820,7 +820,7 @@
     },
     "bookdown": {
       "Package": "bookdown",
-      "Version": "0.40",
+      "Version": "0.41",
       "Source": "Repository",
       "Repository": "CRAN",
       "Requirements": [
@@ -833,7 +833,7 @@
         "xfun",
         "yaml"
       ],
-      "Hash": "896a79478a50c78fb035a37148638f4e"
+      "Hash": "d8b74e267a5774ded5c91786d6d777bb"
     },
     "bslib": {
       "Package": "bslib",
@@ -1012,13 +1012,13 @@
     },
     "evaluate": {
       "Package": "evaluate",
-      "Version": "1.0.0",
+      "Version": "1.0.1",
       "Source": "Repository",
       "Repository": "CRAN",
       "Requirements": [
         "R"
       ],
-      "Hash": "6b567375113ceb7d9f800de4dd42218e"
+      "Hash": "3fd29944b231036ad67c3edb32e02201"
     },
     "fansi": {
       "Package": "fansi",
@@ -1073,14 +1073,14 @@
     },
     "fs": {
       "Package": "fs",
-      "Version": "1.6.4",
+      "Version": "1.6.5",
       "Source": "Repository",
-      "Repository": "RSPM",
+      "Repository": "CRAN",
       "Requirements": [
         "R",
         "methods"
       ],
-      "Hash": "15aeb8c27f5ea5161f9f6a641fafd93a"
+      "Hash": "7f48af39fa27711ea5fbd183b399920d"
     },
     "futile.logger": {
       "Package": "futile.logger",
@@ -1185,7 +1185,7 @@
     },
     "httr2": {
       "Package": "httr2",
-      "Version": "1.0.5",
+      "Version": "1.0.6",
       "Source": "Repository",
       "Repository": "CRAN",
       "Requirements": [
@@ -1202,7 +1202,7 @@
         "vctrs",
         "withr"
       ],
-      "Hash": "d84e4c33206aaace37714901ac2b00c3"
+      "Hash": "3ef5d07ec78803475a94367d71b40c41"
     },
     "jquerylib": {
       "Package": "jquerylib",
@@ -1470,13 +1470,13 @@
     },
     "renv": {
       "Package": "renv",
-      "Version": "1.0.9",
+      "Version": "1.0.11",
       "Source": "Repository",
       "Repository": "CRAN",
       "Requirements": [
         "utils"
       ],
-      "Hash": "ef233f0e9064fc88c898b340c9add5c2"
+      "Hash": "47623f66b4e80b3b0587bc5d7b309888"
     },
     "restfulr": {
       "Package": "restfulr",
@@ -1517,7 +1517,7 @@
     },
     "rmarkdown": {
       "Package": "rmarkdown",
-      "Version": "2.28",
+      "Version": "2.29",
       "Source": "Repository",
       "Repository": "CRAN",
       "Requirements": [
@@ -1536,7 +1536,7 @@
         "xfun",
         "yaml"
       ],
-      "Hash": "062470668513dcda416927085ee9bdc7"
+      "Hash": "df99277f63d01c34e95e3d2f06a79736"
     },
     "rtracklayer": {
       "Package": "rtracklayer",
@@ -1622,10 +1622,10 @@
     },
     "sys": {
       "Package": "sys",
-      "Version": "3.4.2",
+      "Version": "3.4.3",
       "Source": "Repository",
       "Repository": "CRAN",
-      "Hash": "3a1be13d68d47a8cd0bfd74739ca1555"
+      "Hash": "de342ebfebdbf40477d0758d05426646"
     },
     "tibble": {
       "Package": "tibble",
@@ -1698,13 +1698,13 @@
     },
     "tinytex": {
       "Package": "tinytex",
-      "Version": "0.53",
+      "Version": "0.54",
       "Source": "Repository",
       "Repository": "CRAN",
       "Requirements": [
         "xfun"
       ],
-      "Hash": "9db859e8aabbb474293dde3097839420"
+      "Hash": "3ec7e3ddcacc2d34a9046941222bf94d"
     },
     "utf8": {
       "Package": "utf8",
@@ -1732,7 +1732,7 @@
     },
     "withr": {
       "Package": "withr",
-      "Version": "3.0.1",
+      "Version": "3.0.2",
       "Source": "Repository",
       "Repository": "CRAN",
       "Requirements": [
@@ -1740,11 +1740,11 @@
         "grDevices",
         "graphics"
       ],
-      "Hash": "07909200e8bbe90426fbfeb73e1e27aa"
+      "Hash": "cc2d62c76458d425210d1eb1478b30b4"
     },
     "xfun": {
       "Package": "xfun",
-      "Version": "0.47",
+      "Version": "0.49",
       "Source": "Repository",
       "Repository": "CRAN",
       "Requirements": [
@@ -1753,7 +1753,7 @@
         "stats",
         "tools"
       ],
-      "Hash": "36ab21660e2d095fef0d83f689e0477c"
+      "Hash": "8687398773806cfff9401a2feca96298"
     },
     "xml2": {
       "Package": "xml2",