diff --git a/pkgs/misc/vscode-extensions/default.nix b/pkgs/misc/vscode-extensions/default.nix
index 59938b76fe0b..9117364b8205 100644
--- a/pkgs/misc/vscode-extensions/default.nix
+++ b/pkgs/misc/vscode-extensions/default.nix
@@ -11,6 +11,19 @@ in
 # "${mktplcRef.publisher}.${mktplcRef.name}".
 #
 rec {
+
+  alanz.vscode-hie-server = buildVscodeMarketplaceExtension {
+    mktplcRef = {
+      name = "vscode-hie-server";
+      publisher = "alanz";
+      version = "0.0.25"; # see the note above
+      sha256 = "0m21w03v94qxm0i54ki5slh6rg7610zfxinfpngr0hfpgw2nnxvc";
+    };
+    meta = {
+      license = stdenv.lib.licenses.mit;
+    };
+  };
+
   bbenoist.Nix = buildVscodeMarketplaceExtension {
     mktplcRef = {
         name = "Nix";
@@ -23,6 +36,18 @@ rec {
     };
   };
 
+  justusadam.language-haskell = buildVscodeMarketplaceExtension {
+    mktplcRef = {
+      name = "language-haskell";
+      publisher = "justusadam";
+      version = "2.5.0"; # see the note above
+      sha256 = "10jqj8qw5x6da9l8zhjbra3xcbrwb4cpwc3ygsy29mam5pd8g6b3";
+    };
+    meta = {
+      license = stdenv.lib.licenses.bsd3;
+    };
+  };
+
   ms-vscode.cpptools = callPackage ./cpptools {};
 
   ms-python.python = callPackage ./python {};