diff --git a/CHANGELOG.md b/CHANGELOG.md
index 970ff968..db94df48 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project is in the process of adopting [Semantic Versioning](https://sem
 
 ## [Unreleased]
 
+### Added
+
+- New Units
+  - `unit:MilliGM-PER-DeciM2` by [Matt Goldberg](https://github.com/mgberg)
+
 ## [3.0.0] - 2025-02-13
 
 ### Changed
diff --git a/src/main/rdf/vocab/unit/VOCAB_QUDT-UNITS-ALL.ttl b/src/main/rdf/vocab/unit/VOCAB_QUDT-UNITS-ALL.ttl
index 0c296bb9..2c7f0d88 100644
--- a/src/main/rdf/vocab/unit/VOCAB_QUDT-UNITS-ALL.ttl
+++ b/src/main/rdf/vocab/unit/VOCAB_QUDT-UNITS-ALL.ttl
@@ -28583,6 +28583,24 @@ unit:MilliGM-PER-DeciL
   rdfs:label "milligrams per decilitre"@en ;
   rdfs:label "milligrams per decilitre"@en-US .
 
+unit:MilliGM-PER-DeciM2
+  a qudt:Unit ;
+  dcterms:description "0.000001-fold of the SI base unit kilogram divided by the 0.01-fold of the power of the SI base unit metre with the exponent 2"^^rdf:HTML ;
+  qudt:applicableSystem sou:CGS ;
+  qudt:applicableSystem sou:CGS-EMU ;
+  qudt:applicableSystem sou:CGS-GAUSS ;
+  qudt:applicableSystem sou:SI ;
+  qudt:conversionMultiplier 0.0001 ;
+  qudt:conversionMultiplierSN 1.0E-4 ;
+  qudt:hasDimensionVector qkdv:A0E0L-2I0M1H0T0D0 ;
+  qudt:hasQuantityKind quantitykind:MassPerArea ;
+  qudt:plainTextDescription "0.000001-fold of the SI base unit kilogram divided by the 0.01-fold of the power of the SI base unit metre with the exponent 2" ;
+  qudt:symbol "mg/dm²" ;
+  qudt:ucumCode "mg.dm-2"^^qudt:UCUMcs ;
+  rdfs:isDefinedBy <http://qudt.org/$$QUDT_VERSION$$/vocab/unit> ;
+  rdfs:label "Milligram per Square Decimeter"@en-US ;
+  rdfs:label "Milligram per Square Decimetre"@en .
+
 unit:MilliGM-PER-GM
   a qudt:Unit ;
   dcterms:description "0.000001-fold of the SI base unit kilogram divided by the 0.001-fold of the SI base unit kilogram"^^rdf:HTML ;