diff --git a/flake.lock b/flake.lock
index 36b2bd5..6c5b94a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -610,11 +610,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1746193516,
-        "narHash": "sha256-7KqthzbP7LbJpo6DtxlTg2Fqcs7HL1iV1vd1mM8q/u0=",
+        "lastModified": 1746981801,
+        "narHash": "sha256-+Bfr0KqZV6gZdA7e2kupeoawozaLIHLuiPtC54uxbFc=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "355a6b937d07a95cb0b753ef513bcaad09128dea",
+        "rev": "ff915842e4a2e63c4c8c5c08c6870b9d5b3c3ee9",
         "type": "github"
       },
       "original": {
@@ -966,11 +966,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1746152631,
-        "narHash": "sha256-zBuvmL6+CUsk2J8GINpyy8Hs1Zp4PP6iBWSmZ4SCQ/s=",
+        "lastModified": 1746576598,
+        "narHash": "sha256-FshoQvr6Aor5SnORVvh/ZdJ1Sa2U4ZrIMwKBX5k2wu0=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "032bc6539bd5f14e9d0c51bd79cfe9a055b094c3",
+        "rev": "b3582c75c7f21ce0b429898980eddbbf05c68e55",
         "type": "github"
       },
       "original": {
diff --git a/overlay.nix b/overlay.nix
index f43e9a9..45654e3 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -99,7 +99,7 @@ let
 
     rofi-wayland-unwrapped =
       assert final.lib.assertMsg
-        (builtins.compareVersions prev.rofi-wayland-unwrapped.version "1.7.8+wayland1" == -1)
+        (builtins.compareVersions prev.rofi-wayland-unwrapped.version "1.7.8+wayland1" <= 0)
         "We only need this for https://github.com/lbonn/rofi/commit/f2f22e7edc635f7e4022afcf81a411776268c1c3. Use upstream package instead";
       if prev.rofi-wayland-unwrapped.version == "1.7.8+wayland1" then
         prev.rofi-wayland-unwrapped.overrideAttrs (prev: {
@@ -114,23 +114,25 @@ let
       else
         prev.rofi-wayland-unwrapped;
 
-    ollama =
-      assert final.lib.assertMsg (
-        builtins.compareVersions prev.ollama-cuda.version "0.6.7" < 0
-      ) "Remove `ollama` overlay to use upstream version";
-      (prev.ollama.override { rocmGpuTargets = [ "gfx1030" ]; }).overrideAttrs (
-        finalAttrs: prevAttrs: {
-          version = "0.6.7";
-          src = final.fetchFromGitHub {
-            owner = "ollama";
-            repo = "ollama";
-            tag = "v${finalAttrs.version}";
-            hash = "sha256-GRqvaD/tAPI9cVlVu+HmRTv5zr7oCHdSlKoFfSLJ4r4=";
-            fetchSubmodules = true;
-          };
-          vendorHash = "sha256-t7+GLNC6mRcXq9ErxN6gGki5WWWoEcMfzRVjta4fddA=";
-        }
-      );
+    python312 = prev.python312.override {
+      packageOverrides = pfinal: pprev: {
+        langchain =
+          assert final.lib.assertMsg (
+            pprev.langchain.version != "0.3.24"
+          ) "Revert to 0.3.24 has been applied, remove overlay";
+          pprev.langchain.overrideAttrs (
+            afinal: aprev: {
+              version = "0.3.24-fix";
+              src = final.fetchFromGitHub {
+                owner = "langchain-ai";
+                repo = "langchain";
+                tag = "langchain==${afinal.version}";
+                hash = "sha256-Up/pH2TxLPiPO49oIa2ZlNeH3TyN9sZSlNsqOIRmlxc=";
+              };
+            }
+          );
+      };
+    };
   };
 
   overlay-libs = final: prev: {