diff --git a/plugins/hls-cabal-plugin/src/Ide/Plugin/Cabal.hs b/plugins/hls-cabal-plugin/src/Ide/Plugin/Cabal.hs
index 483c5c2820..c92f82168b 100644
--- a/plugins/hls-cabal-plugin/src/Ide/Plugin/Cabal.hs
+++ b/plugins/hls-cabal-plugin/src/Ide/Plugin/Cabal.hs
@@ -114,6 +114,9 @@ descriptor recorder plId =
                   deleteFileOfInterest recorder ide file
                   restartCabalShakeSession (shakeExtras ide) vfs file "(closed)"
           ]
+    , pluginConfigDescriptor = defaultConfigDescriptor
+      { configHasDiagnostics = True
+      }
     }
  where
   log' = logWith recorder
diff --git a/test/testdata/schema/ghc92/default-config.golden.json b/test/testdata/schema/ghc92/default-config.golden.json
index b9b3b46b25..e55282483d 100644
--- a/test/testdata/schema/ghc92/default-config.golden.json
+++ b/test/testdata/schema/ghc92/default-config.golden.json
@@ -9,7 +9,8 @@
         },
         "cabal": {
             "codeActionsOn": true,
-            "completionOn": true
+            "completionOn": true,
+            "diagnosticsOn": true
         },
         "callHierarchy": {
             "globalOn": true
diff --git a/test/testdata/schema/ghc92/vscode-extension-schema.golden.json b/test/testdata/schema/ghc92/vscode-extension-schema.golden.json
index 525f3e1bce..844079ff9b 100644
--- a/test/testdata/schema/ghc92/vscode-extension-schema.golden.json
+++ b/test/testdata/schema/ghc92/vscode-extension-schema.golden.json
@@ -17,6 +17,12 @@
         "scope": "resource",
         "type": "boolean"
     },
+    "haskell.plugin.cabal.diagnosticsOn": {
+        "default": true,
+        "description": "Enables cabal diagnostics",
+        "scope": "resource",
+        "type": "boolean"
+    },
     "haskell.plugin.callHierarchy.globalOn": {
         "default": true,
         "description": "Enables callHierarchy plugin",
diff --git a/test/testdata/schema/ghc94/default-config.golden.json b/test/testdata/schema/ghc94/default-config.golden.json
index 6cef581bc8..e792c5fe8b 100644
--- a/test/testdata/schema/ghc94/default-config.golden.json
+++ b/test/testdata/schema/ghc94/default-config.golden.json
@@ -9,7 +9,8 @@
         },
         "cabal": {
             "codeActionsOn": true,
-            "completionOn": true
+            "completionOn": true,
+            "diagnosticsOn": true
         },
         "callHierarchy": {
             "globalOn": true
diff --git a/test/testdata/schema/ghc94/vscode-extension-schema.golden.json b/test/testdata/schema/ghc94/vscode-extension-schema.golden.json
index 733f3596cf..fe3b42bfdf 100644
--- a/test/testdata/schema/ghc94/vscode-extension-schema.golden.json
+++ b/test/testdata/schema/ghc94/vscode-extension-schema.golden.json
@@ -17,6 +17,12 @@
         "scope": "resource",
         "type": "boolean"
     },
+    "haskell.plugin.cabal.diagnosticsOn": {
+        "default": true,
+        "description": "Enables cabal diagnostics",
+        "scope": "resource",
+        "type": "boolean"
+    },
     "haskell.plugin.callHierarchy.globalOn": {
         "default": true,
         "description": "Enables callHierarchy plugin",
diff --git a/test/testdata/schema/ghc96/default-config.golden.json b/test/testdata/schema/ghc96/default-config.golden.json
index 6cef581bc8..e792c5fe8b 100644
--- a/test/testdata/schema/ghc96/default-config.golden.json
+++ b/test/testdata/schema/ghc96/default-config.golden.json
@@ -9,7 +9,8 @@
         },
         "cabal": {
             "codeActionsOn": true,
-            "completionOn": true
+            "completionOn": true,
+            "diagnosticsOn": true
         },
         "callHierarchy": {
             "globalOn": true
diff --git a/test/testdata/schema/ghc96/vscode-extension-schema.golden.json b/test/testdata/schema/ghc96/vscode-extension-schema.golden.json
index 733f3596cf..fe3b42bfdf 100644
--- a/test/testdata/schema/ghc96/vscode-extension-schema.golden.json
+++ b/test/testdata/schema/ghc96/vscode-extension-schema.golden.json
@@ -17,6 +17,12 @@
         "scope": "resource",
         "type": "boolean"
     },
+    "haskell.plugin.cabal.diagnosticsOn": {
+        "default": true,
+        "description": "Enables cabal diagnostics",
+        "scope": "resource",
+        "type": "boolean"
+    },
     "haskell.plugin.callHierarchy.globalOn": {
         "default": true,
         "description": "Enables callHierarchy plugin",
diff --git a/test/testdata/schema/ghc98/default-config.golden.json b/test/testdata/schema/ghc98/default-config.golden.json
index 28494adf51..7e8aacb406 100644
--- a/test/testdata/schema/ghc98/default-config.golden.json
+++ b/test/testdata/schema/ghc98/default-config.golden.json
@@ -9,7 +9,8 @@
         },
         "cabal": {
             "codeActionsOn": true,
-            "completionOn": true
+            "completionOn": true,
+            "diagnosticsOn": true
         },
         "callHierarchy": {
             "globalOn": true
diff --git a/test/testdata/schema/ghc98/vscode-extension-schema.golden.json b/test/testdata/schema/ghc98/vscode-extension-schema.golden.json
index cf438c18b7..9987252694 100644
--- a/test/testdata/schema/ghc98/vscode-extension-schema.golden.json
+++ b/test/testdata/schema/ghc98/vscode-extension-schema.golden.json
@@ -17,6 +17,12 @@
         "scope": "resource",
         "type": "boolean"
     },
+    "haskell.plugin.cabal.diagnosticsOn": {
+        "default": true,
+        "description": "Enables cabal diagnostics",
+        "scope": "resource",
+        "type": "boolean"
+    },
     "haskell.plugin.callHierarchy.globalOn": {
         "default": true,
         "description": "Enables callHierarchy plugin",