diff --git a/pkgs/by-name/he/helix/package.nix b/pkgs/by-name/he/helix/package.nix
index 4325ce184118..37fc4ea9105d 100644
--- a/pkgs/by-name/he/helix/package.nix
+++ b/pkgs/by-name/he/helix/package.nix
@@ -10,6 +10,9 @@
   lockedGrammars ? lib.importJSON ./grammars.json,
   grammarsOverlay ? (
     final: prev: {
+      tree-sitter-agda = prev.tree-sitter-agda.override {
+        excludeBrokenTreeSitterJson = false;
+      };
       tree-sitter-beancount = prev.tree-sitter-beancount.override {
         excludeBrokenTreeSitterJson = false;
       };
@@ -28,6 +31,15 @@
       tree-sitter-sql = prev.tree-sitter-sql.override {
         generate = false;
       };
+      tree-sitter-strace = prev.tree-sitter-strace.override {
+        excludeBrokenTreeSitterJson = false;
+      };
+      tree-sitter-tact = prev.tree-sitter-tact.override {
+        excludeBrokenTreeSitterJson = false;
+      };
+      tree-sitter-vue = prev.tree-sitter-vue.override {
+        excludeBrokenTreeSitterJson = false;
+      };
     }
   ),
 }:
diff --git a/pkgs/by-name/tr/tree-sitter/grammars/grammar-sources.nix b/pkgs/by-name/tr/tree-sitter/grammars/grammar-sources.nix
index ac828b09fd5e..b6c72d4b9bd4 100644
--- a/pkgs/by-name/tr/tree-sitter/grammars/grammar-sources.nix
+++ b/pkgs/by-name/tr/tree-sitter/grammars/grammar-sources.nix
@@ -30,6 +30,8 @@
         aciceri
       ];
     };
+    # Non-schema `queries` nesting in grammar entry
+    excludeBrokenTreeSitterJson = true;
   };
 
   alloy = {
@@ -740,6 +742,8 @@
         sei40kr
       ];
     };
+    # Non-schema `camelCase` and `external-scanner` fields
+    excludeBrokenTreeSitterJson = true;
   };
 
   gas = {
@@ -1022,6 +1026,8 @@
         aciceri
       ];
     };
+    # Slash in grammar name and non-schema top-level `tree-sitter` field
+    excludeBrokenTreeSitterJson = true;
   };
 
   groovy = {
@@ -1824,6 +1830,8 @@
     meta = {
       license = lib.licenses.mit;
     };
+    # Missing required `metadata.links`
+    excludeBrokenTreeSitterJson = true;
   };
 
   opencl = {
@@ -2200,6 +2208,8 @@
         aciceri
       ];
     };
+    # Missing required `grammars[0].name` and `metadata`
+    excludeBrokenTreeSitterJson = true;
   };
 
   r = {
@@ -2528,6 +2538,8 @@
         aciceri
       ];
     };
+    # Empty `metadata.links.funding` fails URL parsing
+    excludeBrokenTreeSitterJson = true;
   };
 
   supercollider = {
@@ -2617,6 +2629,8 @@
         aciceri
       ];
     };
+    # Non-schema `metadata.links.homepage`
+    excludeBrokenTreeSitterJson = true;
   };
 
   talon = rec {
@@ -2971,6 +2985,8 @@
         jeafleohj
       ];
     };
+    # Relative repository URL, empty funding and author URLs
+    excludeBrokenTreeSitterJson = true;
   };
 
   wast = {
diff --git a/pkgs/development/python-modules/tree-sitter-grammars/default.nix b/pkgs/development/python-modules/tree-sitter-grammars/default.nix
index e84085a6ab25..c2ab41f35662 100644
--- a/pkgs/development/python-modules/tree-sitter-grammars/default.nix
+++ b/pkgs/development/python-modules/tree-sitter-grammars/default.nix
@@ -33,6 +33,7 @@ let
   # of overrides ensures the binding can find the correct symbol
   langIdentOverrides = {
     tree_sitter_org_nvim = "tree_sitter_org";
+    tree_sitter_go_template_helm = "tree_sitter_helm";
   };
   langIdent = langIdentOverrides.${snakeCaseName} or snakeCaseName;
 in