diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 89c3d28..69d0e3d 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -11,14 +11,12 @@
             "id": "6550032d28b9171c",
             "type": "leaf",
             "state": {
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+              "type": "pdf",
               "state": {
-                "file": "Concurrent Systems/notes/5 - Software Transactional Memory.md",
-                "mode": "source",
-                "source": false
+                "file": "Concurrent Systems/slides/class 5.pdf"
               },
-              "icon": "lucide-file",
-              "title": "5 - Software Transactional Memory"
+              "icon": "lucide-file-text",
+              "title": "class 5"
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@@ -191,8 +189,8 @@
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+    "Concurrent Systems/slides/class 5.pdf",
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     "Concurrent Systems/notes/4 - Semaphores.md",
     "\u0002.md",