diff --git a/.changeset/hot-mails-rhyme.md b/.changeset/hot-mails-rhyme.md
new file mode 100644
index 00000000..b578dbf6
--- /dev/null
+++ b/.changeset/hot-mails-rhyme.md
@@ -0,0 +1,5 @@
+---
+'@smartcontractkit/operator-ui': patch
+---
+
+Increase limit for number of chains in FMS
diff --git a/src/screens/FeedsManager/EditSupportedChainDialog.tsx b/src/screens/FeedsManager/EditSupportedChainDialog.tsx
index 096225c7..7db69a9f 100644
--- a/src/screens/FeedsManager/EditSupportedChainDialog.tsx
+++ b/src/screens/FeedsManager/EditSupportedChainDialog.tsx
@@ -33,6 +33,7 @@ export const EditSupportedChainDialog = ({
   const formRef = React.useRef()
 
   const { data: chainData } = useChainsQuery({
+    variables: { limit: 999 },
     fetchPolicy: 'network-only',
   })
 
diff --git a/src/screens/FeedsManager/NewSupportedChainDialog.tsx b/src/screens/FeedsManager/NewSupportedChainDialog.tsx
index 21d2b543..cfcbe1ab 100644
--- a/src/screens/FeedsManager/NewSupportedChainDialog.tsx
+++ b/src/screens/FeedsManager/NewSupportedChainDialog.tsx
@@ -28,6 +28,7 @@ export const NewSupportedChainDialog = ({ onClose, open, onSubmit }: Props) => {
   const formRef = React.useRef()
 
   const { data: chainData } = useChainsQuery({
+    variables: { limit: 999 },
     fetchPolicy: 'network-only',
   })