diff --git a/src/eth/client.yaml b/src/eth/client.yaml
index 416df4c0a..f3a9cca0f 100644
--- a/src/eth/client.yaml
+++ b/src/eth/client.yaml
@@ -70,3 +70,16 @@
       result:
         name: Block number
         value: '0x2377'
+- name: net_version
+  summary: Returns the current network ID. This is usually equivalent to the chainID, but may differ from it for some legacy networks or special testnets.
+  params: []
+  result:
+    name: Network ID
+    schema:
+      $ref: '#/components/schemas/uintDecimal'
+  examples:
+    - name: net_version example
+      params: []
+      result:
+        name: Network ID
+        value: '1'
diff --git a/src/schemas/base-types.yaml b/src/schemas/base-types.yaml
index 500d6c358..42d91b440 100644
--- a/src/schemas/base-types.yaml
+++ b/src/schemas/base-types.yaml
@@ -60,6 +60,10 @@ uint256:
   title: hex encoded 256 bit unsigned integer
   type: string
   pattern: ^0x(0|[1-9a-f][0-9a-f]{0,63})$
+uintDecimal:
+  title: decimal unsigned integer string
+  type: string
+  pattern: ^[1-9][0-9]*$
 hash32:
   title: 32 byte hex value
   type: string
diff --git a/tests/net_version/get-network-id.io b/tests/net_version/get-network-id.io
new file mode 100644
index 000000000..03cab5e8b
--- /dev/null
+++ b/tests/net_version/get-network-id.io
@@ -0,0 +1,3 @@
+// Calls net_version to retrieve the network ID, which is expected to be equal to the chainID of the test chain.
+>> {"jsonrpc":"2.0","id":1,"method":"net_version"}
+<< {"jsonrpc":"2.0","id":1,"result":"3503995874084926"}