diff --git a/_data/chains/eip155-5.json b/_data/chains/eip155-5.json
index 34cb5453..eaa342e4 100644
--- a/_data/chains/eip155-5.json
+++ b/_data/chains/eip155-5.json
@@ -2,7 +2,6 @@
   "name": "Görli",
   "title": "Ethereum Testnet Görli",
   "chain": "ETH",
-  "network": "goerli",
   "rpc": [
     "https://rpc.goerli.mudit.blog/",
     "https://rpc.slock.it/goerli",
diff --git a/model/src/main/kotlin/org/ethereum/lists/chains/model/Chain.kt b/model/src/main/kotlin/org/ethereum/lists/chains/model/Chain.kt
index 0dd6c247..6cf42eb6 100644
--- a/model/src/main/kotlin/org/ethereum/lists/chains/model/Chain.kt
+++ b/model/src/main/kotlin/org/ethereum/lists/chains/model/Chain.kt
@@ -7,7 +7,8 @@ data class Chain(
     val name: String,
     val shortName: String,
     val chain: String,
-    val network: String,
+    @Deprecated("Will be removed in the future")
+    val network: String?,
     val chainId: Long,
     val networkId: Long,
     val rpc: List<String>,
diff --git a/processor/src/main/kotlin/org/ethereum/lists/chains/Env.kt b/processor/src/main/kotlin/org/ethereum/lists/chains/Env.kt
index 2966021b..fbb13991 100644
--- a/processor/src/main/kotlin/org/ethereum/lists/chains/Env.kt
+++ b/processor/src/main/kotlin/org/ethereum/lists/chains/Env.kt
@@ -8,7 +8,6 @@ val mandatory_fields = listOf(
         "name",
         "shortName",
         "chain",
-        "network",
         "chainId",
         "networkId",
         "rpc",
@@ -22,6 +21,7 @@ val optionalFields = listOf(
         "icon",
         "explorers",
         "title",
+        "network",
         "parent"
 )
 
diff --git a/processor/src/test/resources/test_chains/invalid/eip155-1.json b/processor/src/test/resources/test_chains/invalid/eip155-1.json
index ad1da697..b2a9051c 100644
--- a/processor/src/test/resources/test_chains/invalid/eip155-1.json
+++ b/processor/src/test/resources/test_chains/invalid/eip155-1.json
@@ -3,7 +3,6 @@
   "name": "Ethereum",
   "shortName": "eth",
   "chain": "ETH",
-  "network": "mainnet",
   "chainId": 1,
   "networkId": 1,
   "rpc": [
diff --git a/processor/src/test/resources/test_chains/valid/eip155-5.json b/processor/src/test/resources/test_chains/valid/eip155-5.json
index f8c7e5a0..15387bf6 100644
--- a/processor/src/test/resources/test_chains/valid/eip155-5.json
+++ b/processor/src/test/resources/test_chains/valid/eip155-5.json
@@ -1,7 +1,6 @@
 {
   "name": "Ethereum Testnet Görli",
   "chain": "ETH",
-  "network": "goerli",
   "rpc": [
     "https://rpc.goerli.mudit.blog/",
     "https://rpc.slock.it/goerli ",