diff --git a/extensions/positron-r/ark b/extensions/positron-r/ark
index db054ebabb0..9dfc3e7bce9 160000
--- a/extensions/positron-r/ark
+++ b/extensions/positron-r/ark
@@ -1 +1 @@
-Subproject commit db054ebabb074e58af0b4ddcbfdb9c995415c0b3
+Subproject commit 9dfc3e7bce97024865ffc5f3b31d29f3f0b56346
diff --git a/extensions/positron-r/package.json b/extensions/positron-r/package.json
index 36bf1efff2b..db237972f27 100644
--- a/extensions/positron-r/package.json
+++ b/extensions/positron-r/package.json
@@ -229,6 +229,11 @@
             "default": true,
             "description": "%r.configuration.diagnostics.enable.description%"
           },
+          "oak.sourceFetching.enabled": {
+            "type": "boolean",
+            "default": true,
+            "markdownDescription": "%r.configuration.oak.sourceFetching.enabled.description%"
+          },
           "positron.r.symbols.includeAssignmentsInBlocks": {
             "type": "boolean",
             "default": false,
diff --git a/extensions/positron-r/package.nls.json b/extensions/positron-r/package.nls.json
index 3a1c006bf3e..bb960b083de 100644
--- a/extensions/positron-r/package.nls.json
+++ b/extensions/positron-r/package.nls.json
@@ -80,6 +80,7 @@
 	"r.configuration.pipe.native.description": "Native pipe available in R >= 4.1",
 	"r.configuration.pipe.magrittr.description": "Pipe operator from the magrittr package, re-exported by many other packages",
 	"r.configuration.diagnostics.enable.description": "Enable R diagnostics globally",
+	"r.configuration.oak.sourceFetching.enabled.description": "Recover the R sources of the packages your workspace uses, for intellisense and code navigation. Sources come from your local installation when available, and are otherwise downloaded from CRAN and cached on disk.",
 	"r.configuration.symbols.includeAssignmentsInBlocks.description": "Controls whether assigned objects inside `{}` blocks are included as document symbols, in addition to top-level assignments. Reopen files or restart the server for the setting to take effect.",
 	"r.configuration.workspaceSymbols.includeCommentSections.description": "Controls whether comment sections like `# My section ---` are included as workspace symbols.",
 	"r.configuration.autoConvertFilePaths.description": "Automatically convert file paths when pasting files from file manager into R scripts. Converts backslashes (\\) to forward slashes (/), adds quotes, and formats multiple files as R vectors.",