diff --git a/flake.lock b/flake.lock
index ebe74afdb..c11f190f1 100644
--- a/flake.lock
+++ b/flake.lock
@@ -36,11 +36,11 @@
     },
     "nixpkgs-for-circt": {
       "locked": {
-        "lastModified": 1722640603,
-        "narHash": "sha256-TcXjLVNd3VeH1qKPH335Tc4RbFDbZQX+d7rqnDUoRaY=",
+        "lastModified": 1723274555,
+        "narHash": "sha256-gDCMNBju0BwYHUPp6RVVnqE0VnbXl53VMk21OT9fkFw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "81610abc161d4021b29199aa464d6a1a521e0cc9",
+        "rev": "33c40979a7ccf487d6c0e1a420ecf8e4ac2b676e",
         "type": "github"
       },
       "original": {
diff --git a/nix/t1/_sources/generated.json b/nix/t1/_sources/generated.json
index ddd96858e..47c0b9c99 100644
--- a/nix/t1/_sources/generated.json
+++ b/nix/t1/_sources/generated.json
@@ -41,7 +41,7 @@
     },
     "chisel": {
         "cargoLocks": null,
-        "date": "2024-08-09",
+        "date": "2024-08-10",
         "extract": null,
         "name": "chisel",
         "passthru": null,
@@ -53,11 +53,11 @@
             "name": null,
             "owner": "chipsalliance",
             "repo": "chisel",
-            "rev": "3b64e70af4ffa02796bd174667b6d5f3c2a99197",
-            "sha256": "sha256-mU/+KmZDJtcZ++zWYeH5isbpZ/oeeuQyQ41IvGOoE6Y=",
+            "rev": "c49ff98db352b6da445da48327aaf3b8c1dd04d2",
+            "sha256": "sha256-rwQHowVLUcyS4YoSaiTQd1QFbl4ujExzSDd4lo3fpZc=",
             "type": "github"
         },
-        "version": "3b64e70af4ffa02796bd174667b6d5f3c2a99197"
+        "version": "c49ff98db352b6da445da48327aaf3b8c1dd04d2"
     },
     "chisel-interface": {
         "cargoLocks": null,
diff --git a/nix/t1/_sources/generated.nix b/nix/t1/_sources/generated.nix
index 71fc799e6..569eb10e8 100644
--- a/nix/t1/_sources/generated.nix
+++ b/nix/t1/_sources/generated.nix
@@ -27,15 +27,15 @@
   };
   chisel = {
     pname = "chisel";
-    version = "3b64e70af4ffa02796bd174667b6d5f3c2a99197";
+    version = "c49ff98db352b6da445da48327aaf3b8c1dd04d2";
     src = fetchFromGitHub {
       owner = "chipsalliance";
       repo = "chisel";
-      rev = "3b64e70af4ffa02796bd174667b6d5f3c2a99197";
+      rev = "c49ff98db352b6da445da48327aaf3b8c1dd04d2";
       fetchSubmodules = false;
-      sha256 = "sha256-mU/+KmZDJtcZ++zWYeH5isbpZ/oeeuQyQ41IvGOoE6Y=";
+      sha256 = "sha256-rwQHowVLUcyS4YoSaiTQd1QFbl4ujExzSDd4lo3fpZc=";
     };
-    date = "2024-08-09";
+    date = "2024-08-10";
   };
   chisel-interface = {
     pname = "chisel-interface";