diff --git a/src/bonsai/bonsai/bim/data/assets/default.css b/src/bonsai/bonsai/bim/data/assets/default.css
index d82d97e8f2..f154cc0c74 100644
--- a/src/bonsai/bonsai/bim/data/assets/default.css
+++ b/src/bonsai/bonsai/bim/data/assets/default.css
@@ -79,6 +79,8 @@ text.header, tspan.header { /* 5mm */ font-size: 8.25px; }
 text.large, tspan.large { /* 3.5mm */ font-size: 5.78px; }
 text.regular, tspan.regular { /* 2.5mm */ font-size: 4.13px; }
 text.small, tspan.small { /* 1.8mm */ font-size: 2.97px; }
+text.tiny, tspan.tiny { /* 1.5mm */ font-size: 2.48px; }
+text.mini, tspan.mini { /* 1.3mm */ font-size: 2.15px; }
 text.GRID, tspan.GRID { /* 5mm */ font-size: 8.25px; }
 .material-blank { fill: white; }
 .material-diagonal1 { fill: url(#diagonal1); }
diff --git a/src/bonsai/bonsai/bim/module/drawing/data.py b/src/bonsai/bonsai/bim/module/drawing/data.py
index 23ee7c1987..6c42730e1c 100644
--- a/src/bonsai/bonsai/bim/module/drawing/data.py
+++ b/src/bonsai/bonsai/bim/module/drawing/data.py
@@ -224,6 +224,8 @@ class DocumentsData:
 
 
 FONT_SIZES = {
+    "mini": 1.3,
+    "tiny": 1.5,
     "small": 1.8,
     "regular": 2.5,
     "large": 3.5,
diff --git a/src/bonsai/bonsai/bim/module/drawing/prop.py b/src/bonsai/bonsai/bim/module/drawing/prop.py
index f22d7128d8..ca9c69d7a0 100644
--- a/src/bonsai/bonsai/bim/module/drawing/prop.py
+++ b/src/bonsai/bonsai/bim/module/drawing/prop.py
@@ -917,6 +917,8 @@ class BIMTextProperties(PropertyGroup):
     )
     font_size: EnumProperty(
         items=[
+            ("1.3", "1.3 - Mini", ""),
+            ("1.5", "1.5 - Tiny", ""),
             ("1.8", "1.8 - Small", ""),
             ("2.5", "2.5 - Regular", ""),
             ("3.5", "3.5 - Large", ""),
diff --git a/src/bonsai/test/tool/test_drawing.py b/src/bonsai/test/tool/test_drawing.py
index 580b326822..60d8ed3918 100644
--- a/src/bonsai/test/tool/test_drawing.py
+++ b/src/bonsai/test/tool/test_drawing.py
@@ -851,6 +851,25 @@ class TestEditText(NewFile):
         assert "title" in annotation_classes
         assert DecoratorData.get_text_data(obj)["FontSize"] == 7.0
 
+    @pytest.mark.parametrize("font_size, class_name", [("1.3", "mini"), ("1.5", "tiny")])
+    def test_change_text_font_size_to_small_sizes(self, font_size, class_name):
+        TestGetTextLiteral().test_run()
+        obj = bpy.data.objects["Object"]
+
+        with bpy.context.temp_override(active_object=obj):
+            bpy.ops.bim.enable_editing_text()
+            props = tool.Drawing.get_text_props(obj)
+            props.font_size = font_size
+            bpy.ops.bim.edit_text()
+
+        annotation_classes = ifcopenshell.util.element.get_pset(tool.Ifc.get_entity(obj), "EPset_Annotation", "Classes")
+        assert class_name in annotation_classes.split()
+        assert DecoratorData.get_text_data(obj)["FontSize"] == float(font_size)
+
+        # Font size round-trips back into the property.
+        subject.import_text_attributes(obj)
+        assert tool.Drawing.get_text_props(obj).font_size == font_size
+
     def test_add_second_literal(self, setup=True):
         if setup:
             TestGetTextLiteral().test_run()