diff --git a/config/cln.conf b/config/cln.conf
new file mode 100644
index 000000000..d3af8cdea
--- /dev/null
+++ b/config/cln.conf
@@ -0,0 +1,6 @@
+network=regtest
+log-level=debug
+bitcoin-rpcuser=username
+bitcoin-rpcpassword=password
+bitcoin-rpcconnect=localhost
+bitcoin-rpcport=18443
diff --git a/devenv.lock b/devenv.lock
index f0f2df37b..294a917bc 100644
--- a/devenv.lock
+++ b/devenv.lock
@@ -3,10 +3,10 @@
     "devenv": {
       "locked": {
         "dir": "src/modules",
-        "lastModified": 1746101600,
+        "lastModified": 1749632886,
         "owner": "cachix",
         "repo": "devenv",
-        "rev": "86dbb4b05ac23147bcc468e7ed77567bae11e418",
+        "rev": "0d39abfbac9ac9f421f2c43453af4ebc13227521",
         "type": "github"
       },
       "original": {
@@ -24,10 +24,10 @@
         "rust-analyzer-src": "rust-analyzer-src"
       },
       "locked": {
-        "lastModified": 1746081462,
+        "lastModified": 1749623906,
         "owner": "nix-community",
         "repo": "fenix",
-        "rev": "e3be528e4f03538852ba49b413ec4ac843edeb60",
+        "rev": "873cccc628f5e39407e319e6711f3b7d6d1f15cc",
         "type": "github"
       },
       "original": {
@@ -39,10 +39,10 @@
     "flake-compat": {
       "flake": false,
       "locked": {
-        "lastModified": 1733328505,
+        "lastModified": 1747046372,
         "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "ff81ac966bb2cae68946d5ed5fc4994f96d0ffec",
+        "rev": "9100a0f413b0c601e0533d1d94ffd501ce2e7885",
         "type": "github"
       },
       "original": {
@@ -60,10 +60,10 @@
         ]
       },
       "locked": {
-        "lastModified": 1742649964,
+        "lastModified": 1747372754,
         "owner": "cachix",
         "repo": "git-hooks.nix",
-        "rev": "dcf5072734cb576d2b0c59b2ac44f5050b5eac82",
+        "rev": "80479b6ec16fefd9c1db3ea13aeb038c60530f46",
         "type": "github"
       },
       "original": {
@@ -94,10 +94,10 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1733477122,
+        "lastModified": 1746807397,
         "owner": "cachix",
         "repo": "devenv-nixpkgs",
-        "rev": "7bd9e84d0452f6d2e63b6e6da29fe73fac951857",
+        "rev": "c5208b594838ea8e6cca5997fbf784b7cca1ca90",
         "type": "github"
       },
       "original": {
@@ -121,10 +121,10 @@
     "rust-analyzer-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1746024678,
+        "lastModified": 1749558764,
         "owner": "rust-lang",
         "repo": "rust-analyzer",
-        "rev": "5d66d45005fef79751294419ab9a9fa304dfdf5c",
+        "rev": "9c3476d225ccc90c081280c2a20e9f7d8a200325",
         "type": "github"
       },
       "original": {
diff --git a/devenv.nix b/devenv.nix
index 94ae4ab78..ec6c3d4f4 100644
--- a/devenv.nix
+++ b/devenv.nix
@@ -12,6 +12,7 @@
   };
 
   bitcoindDataDir = "${config.devenv.root}/.devenv/state/bitcoind";
+  lightningClnDataDir = "${config.devenv.root}/.devenv/state/cln";
 
   poolConfig = builtins.fromTOML (builtins.readFile ./config/pool.toml);
   minerConfig = builtins.fromTOML (builtins.readFile ./config/miner.toml);
@@ -43,6 +44,7 @@ in {
       pkgs.just
       pkgs.coreutils # Provides stdbuf for disabling output buffering
       pkgs.redis
+      pkgs.clightning # Lightning - CLN
     ]
     ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [pkgs.darwin.apple_sdk.frameworks.Security];
 
@@ -98,6 +100,19 @@ in {
         bitcoind -datadir=${bitcoindDataDir} -conf=${config.devenv.root}/bitcoin.conf
       '' "bitcoind-regtest.log";
     };
+    # Lightning node -- CLN
+    lightning-cln = {
+      exec = withLogging ''
+        mkdir -p ${lightningClnDataDir}
+        echo "Waiting for bitcoind..."
+        while ! nc -z localhost 18443; do
+          sleep 1
+        done
+        echo "bitcoind is up. Starting lightning..."
+        lightningd --version
+        lightningd --conf=${config.devenv.root}/config/cln.conf --lightning-dir=${lightningClnDataDir}
+      '' "cln.log";
+    };
     miner = {
       exec = withLogging ''
         echo "Waiting for proxy..."