diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 69d0e3d..f0b9e5b 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -11,12 +11,14 @@
             "id": "6550032d28b9171c",
             "type": "leaf",
             "state": {
-              "type": "pdf",
+              "type": "markdown",
               "state": {
-                "file": "Concurrent Systems/slides/class 5.pdf"
+                "file": "Concurrent Systems/notes/1b - Peterson algorithm.md",
+                "mode": "source",
+                "source": false
               },
-              "icon": "lucide-file-text",
-              "title": "class 5"
+              "icon": "lucide-file",
+              "title": "1b - Peterson algorithm"
             }
           }
         ]
@@ -189,8 +191,8 @@
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-    "Concurrent Systems/notes/5 - Software Transactional Memory.md",
     "Concurrent Systems/slides/class 5.pdf",
+    "Concurrent Systems/notes/5 - Software Transactional Memory.md",
     "Concurrent Systems/notes/4c - Dining Philosophers.md",
     "Concurrent Systems/notes/4 - Semaphores.md",
     "\u0002.md",