diff --git a/.github/workflows/rainix.yaml b/.github/workflows/rainix.yaml
index 7507589..05e4310 100644
--- a/.github/workflows/rainix.yaml
+++ b/.github/workflows/rainix.yaml
@@ -55,6 +55,7 @@ jobs:
           CI_DEPLOY_SEPOLIA_RPC_URL: ${{ secrets.CI_DEPLOY_SEPOLIA_RPC_URL || vars.CI_DEPLOY_SEPOLIA_RPC_URL }}
           ARBITRUM_RPC_URL: ${{ secrets.RPC_URL_ARBITRUM_FORK || vars.RPC_URL_ARBITRUM_FORK }}
           BASE_RPC_URL: ${{ secrets.RPC_URL_BASE_FORK || vars.RPC_URL_BASE_FORK }}
+          BASE_SEPOLIA_RPC_URL: ${{ secrets.RPC_URL_BASE_SEPOLIA_FORK || vars.RPC_URL_BASE_SEPOLIA_FORK }}
           FLARE_RPC_URL: ${{ secrets.RPC_URL_FLARE_FORK || vars.RPC_URL_FLARE_FORK }}
           POLYGON_RPC_URL: ${{ secrets.RPC_URL_POLYGON_FORK || vars.RPC_URL_POLYGON_FORK }}
         run: nix develop -c ${{ matrix.task }}
diff --git a/foundry.toml b/foundry.toml
index c1b60e9..ad271be 100644
--- a/foundry.toml
+++ b/foundry.toml
@@ -11,5 +11,6 @@ bytecode_hash = "none"
 [rpc_endpoints]
 arbitrum = "${ARBITRUM_RPC_URL}"
 base = "${BASE_RPC_URL}"
+base_sepolia = "${BASE_SEPOLIA_RPC_URL}"
 flare = "${FLARE_RPC_URL}"
 polygon = "${POLYGON_RPC_URL}"
diff --git a/src/lib/LibRainDeploy.sol b/src/lib/LibRainDeploy.sol
index 2401792..186f67a 100644
--- a/src/lib/LibRainDeploy.sol
+++ b/src/lib/LibRainDeploy.sol
@@ -47,6 +47,9 @@ library LibRainDeploy {
     /// Config name for Base network.
     string constant BASE = "base";
 
+    /// Config name for Base Sepolia testnet.
+    string constant BASE_SEPOLIA = "base_sepolia";
+
     /// Config name for Flare network.
     string constant FLARE = "flare";
 
@@ -88,11 +91,12 @@ library LibRainDeploy {
     /// Returns the list of networks currently supported by Rain deployments.
     /// @return networks The list of supported network names.
     function supportedNetworks() internal pure returns (string[] memory) {
-        string[] memory networks = new string[](4);
+        string[] memory networks = new string[](5);
         networks[0] = ARBITRUM_ONE;
         networks[1] = BASE;
-        networks[2] = FLARE;
-        networks[3] = POLYGON;
+        networks[2] = BASE_SEPOLIA;
+        networks[3] = FLARE;
+        networks[4] = POLYGON;
         return networks;
     }
 
diff --git a/test/src/lib/LibRainDeploy.t.sol b/test/src/lib/LibRainDeploy.t.sol
index 10293cb..a7bea67 100644
--- a/test/src/lib/LibRainDeploy.t.sol
+++ b/test/src/lib/LibRainDeploy.t.sol
@@ -28,15 +28,16 @@ contract MockReverter {
 contract LibRainDeployTest is Test {
     mapping(string => mapping(address => bytes32)) internal sDepCodeHashes;
 
-    /// `supportedNetworks` MUST return exactly 4 networks in the expected
+    /// `supportedNetworks` MUST return exactly 5 networks in the expected
     /// order matching the library constants.
     function testSupportedNetworks() external pure {
         string[] memory networks = LibRainDeploy.supportedNetworks();
-        assertEq(networks.length, 4);
+        assertEq(networks.length, 5);
         assertEq(networks[0], LibRainDeploy.ARBITRUM_ONE);
         assertEq(networks[1], LibRainDeploy.BASE);
-        assertEq(networks[2], LibRainDeploy.FLARE);
-        assertEq(networks[3], LibRainDeploy.POLYGON);
+        assertEq(networks[2], LibRainDeploy.BASE_SEPOLIA);
+        assertEq(networks[3], LibRainDeploy.FLARE);
+        assertEq(networks[4], LibRainDeploy.POLYGON);
     }
 
     /// `ZOLTU_FACTORY_CODEHASH` MUST match the actual codehash of the Zoltu
@@ -362,9 +363,7 @@ contract LibRainDeployTest is Test {
 
         vm.expectRevert(
             abi.encodeWithSelector(
-                LibRainDeploy.MissingDependency.selector,
-                LibRainDeploy.ARBITRUM_ONE,
-                LibRainDeploy.ZOLTU_FACTORY
+                LibRainDeploy.MissingDependency.selector, LibRainDeploy.ARBITRUM_ONE, LibRainDeploy.ZOLTU_FACTORY
             )
         );
         this.externalDeployToNetworks(networks, address(this), hex"", "", address(0), bytes32(0), dependencies);
@@ -439,9 +438,7 @@ contract LibRainDeployTest is Test {
 
         vm.expectRevert(
             abi.encodeWithSelector(
-                LibRainDeploy.MissingDependency.selector,
-                LibRainDeploy.ARBITRUM_ONE,
-                address(0xdead)
+                LibRainDeploy.MissingDependency.selector, LibRainDeploy.ARBITRUM_ONE, address(0xdead)
             )
         );
         this.externalDeployToNetworks(networks, address(this), hex"", "", address(0), bytes32(0), dependencies);