diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index b4e22f63ae8d..2c611f82315c 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -19511,6 +19511,12 @@
       fingerprint = "6866 981C 4992 4D64 D154  E1AC 19E5 A2D8 B1E4 3F19";
     }];
   };
+  t4sm5n = {
+    email = "t4sm5n@gmail.com";
+    github = "t4sm5n";
+    githubId = 28858039;
+    name = "Tuomas Mäkinen";
+  };
   tadeokondrak = {
     email = "me@tadeo.ca";
     github = "tadeokondrak";
diff --git a/pkgs/applications/editors/vscode/extensions/default.nix b/pkgs/applications/editors/vscode/extensions/default.nix
index 6f78a052a176..5cf2b7b53d06 100644
--- a/pkgs/applications/editors/vscode/extensions/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/default.nix
@@ -2352,6 +2352,23 @@ let
         };
       };
 
+      k--kato.intellij-idea-keybindings = buildVscodeMarketplaceExtension {
+        mktplcRef = {
+          name = "intellij-idea-keybindings";
+          publisher = "k--kato";
+          version = "1.7.0";
+          hash = "sha256-mIcSZANZlj5iO2oLiJBUHn08rXVhu/9SKsRhlu/hcvI=";
+        };
+        meta = {
+          changelog = "https://marketplace.visualstudio.com/items/k--kato.intellij-idea-keybindings/changelog";
+          description = "Visual Studio Code extension for IntelliJ IDEA keybindings";
+          downloadPage = "https://marketplace.visualstudio.com/items?itemName=k--kato.intellij-idea-keybindings";
+          homepage = "https://github.com/kasecato/vscode-intellij-idea-keybindings";
+          license = lib.licenses.mit;
+          maintainers = [ lib.maintainers.t4sm5n ];
+        };
+      };
+
       kahole.magit = buildVscodeMarketplaceExtension {
         mktplcRef = {
           name = "magit";