diff --git a/.gitignore b/.gitignore
index 60edfa7..029d9ba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,8 @@
 /__pycache__/
 /.env/
 /dist/
-/sde/
+/esf_pb2.js
 /esf_pb2.py
+/node_modules/
+/package-lock.json
+/sde/
diff --git a/README.md b/README.md
index f38ed44..0441f75 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ This is exported to Python and Javascript with the following commands:
 
 ```bash
 protoc --python_out=. esf.proto
-web/node_modules/.bin/pbjs -t static-module -w es6 -o esf_pb2.js esf.proto --no-create --no-encode --no-verify --no-convert --no-delimited --no-typeurl --no-beautify --no-comments --no-service
+npx pbjs -t static-module -w es6 -o esf_pb2.js esf.proto --no-create --no-encode --no-verify --no-convert --no-delimited --no-typeurl --no-beautify --no-comments --no-service
 ```
 
 ## Converting
diff --git a/convert.py b/convert.py
index 4302192..ce36939 100644
--- a/convert.py
+++ b/convert.py
@@ -79,6 +79,26 @@ def convert_type_ids(path):
     return ships
 
 
+def convert_group_ids(path):
+    print("Converting groupIDs ...")
+
+    with open(f"{path}/groupIDs.yaml") as fp:
+        groupIDs = yaml.load(fp, Loader=yaml.CSafeLoader)
+
+    pb2 = esf_pb2.GroupIDs()
+    ships = []
+
+    for id, entry in groupIDs.items():
+        pb2.entries[id].name = entry["name"]["en"]
+        pb2.entries[id].categoryID = entry["categoryID"]
+        pb2.entries[id].published = entry["published"]
+
+    with open("dist/sde/groupIDs.pb2", "wb") as fp:
+        fp.write(pb2.SerializeToString())
+
+    return ships
+
+
 def convert_dogma_attributes(path):
     print("Converting dogmaAttributes ...")
 
@@ -267,6 +287,7 @@ def convert_dogma_effects(path):
         fp.write(pb2.SerializeToString())
 
 
+convert_group_ids(path)
 ships = convert_type_ids(path)
 convert_type_dogma(path, ships)
 convert_dogma_attributes(path)
diff --git a/esf.proto b/esf.proto
index b9657f0..7391acf 100644
--- a/esf.proto
+++ b/esf.proto
@@ -38,6 +38,16 @@ message TypeIDs {
     map<int32, TypeID> entries = 1;
 }
 
+message GroupIDs {
+    message GroupID {
+        required string name = 1;
+        required int32 categoryID = 2;
+        required bool published = 3;
+    }
+
+    map<int32, GroupID> entries = 1;
+}
+
 message DogmaAttributes {
     message DogmaAttribute {
         required string name = 1;
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..b3a9cb9
--- /dev/null
+++ b/package.json
@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "protobufjs-cli": "^1.1.2"
+  }
+}