diff --git a/integration_tests/shell.nix b/integration_tests/shell.nix
index 4875503778..fe275138a5 100644
--- a/integration_tests/shell.nix
+++ b/integration_tests/shell.nix
@@ -20,7 +20,7 @@ pkgs.mkShell {
     pkgs.test-env
     pkgs.nixpkgs-fmt
     pkgs.rocksdb
-    # pkgs.chain-maind
+    pkgs.chain-maind
     pkgs.hermes
     pkgs.rly
   ];
diff --git a/nix/sources.json b/nix/sources.json
index 5da46d8e2e..d2e859dc26 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -1,14 +1,14 @@
 {
     "chain-main": {
-        "branch": "v4.2.8",
+        "branch": "fix-nix",
         "description": "Crypto.org Chain⛓: Croeseid Testnet and beyond development",
         "homepage": "https://crypto.org",
-        "owner": "crypto-org-chain",
+        "owner": "yihuang",
         "repo": "chain-main",
-        "rev": "641d3b9c562fa3836fb5f4ab8b0b4aa93e894c47",
-        "sha256": "0cpwqbnddjfha745v2k74cg43ip1rl6qay4gpy6ylq0nbjmz0yv8",
+        "rev": "8059fbdb626bd57208c1241a1bfc0c6079155c74",
+        "sha256": "16pys4smd6hxmsbrvzcwvh3lwrsvlhfn80wixr7vy15xz8cm05na",
         "type": "tarball",
-        "url": "https://github.com/crypto-org-chain/chain-main/archive/641d3b9c562fa3836fb5f4ab8b0b4aa93e894c47.tar.gz",
+        "url": "https://github.com/yihuang/chain-main/archive/8059fbdb626bd57208c1241a1bfc0c6079155c74.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "cosmos-sdk": {
diff --git a/nix/testenv.nix b/nix/testenv.nix
index 7fa2081d02..092e4337ec 100644
--- a/nix/testenv.nix
+++ b/nix/testenv.nix
@@ -7,7 +7,7 @@ poetry2nix.mkPoetryEnv {
       let
         buildSystems = {
           eth-bloom = [ "setuptools" ];
-          pystarport = [ "poetry-core" "setuptools" ];
+          pystarport = [ "poetry-core" ];
           cprotobuf = [ "setuptools" ];
           durations = [ "setuptools" ];
           multitail2 = [ "setuptools" ];