diff --git a/src/FileFormats/MOF/mof.schema.json b/src/FileFormats/MOF/mof.schema.json
index 8bb513feb7..bf9fea9833 100644
--- a/src/FileFormats/MOF/mof.schema.json
+++ b/src/FileFormats/MOF/mof.schema.json
@@ -1,6 +1,6 @@
 {
     "$schema": "https://json-schema.org/schema#",
-    "$id": "https://jump.dev/MathOptFormat/schemas/mof.1.8.schema.json",
+    "$id": "https://jump.dev/MathOptFormat/schemas/mof.1.9.schema.json",
     "title": "The schema for MathOptFormat",
     "type": "object",
     "required": ["version", "variables", "objective", "constraints"],
@@ -11,7 +11,7 @@
             "required": ["major", "minor"],
             "properties": {
                 "major": {"const": 1},
-                "minor": {"enum": [0, 1, 2, 3, 4, 5, 6, 7, 8]}
+                "minor": {"enum": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]}
             }
         },
         "name": {
@@ -638,13 +638,21 @@
                     "dimension": {"type": "integer", "minimum": 1}
                 }
             }, {
-                "description": "(u, v, w) ∈ {R^{dimension}: u ≥ Σᵢ wᵢlog(wᵢ/vᵢ), vᵢ ≥ 0, wᵢ ≥ 0}",
+                "description": "(u, v, w) ∈ {R^{dimension}: u ≥ Σᵢ wᵢlog(wᵢ/vᵢ), vᵢ > 0, wᵢ > 0}",
                 "examples": ["{\"type\": \"RelativeEntropyCone\", \"dimension\": 3}"],
                 "required": ["dimension"],
                 "properties": {
                     "type": {"const": "RelativeEntropyCone"},
                     "dimension": {"type": "integer", "minimum": 3}
                 }
+            }, {
+                "description": "(u, v, w) ∈ {R^{dimension}: ∀i, wᵢ ≥ u(log(u/vᵢ) - 1), vᵢ > 0, u > 0}",
+                "examples": ["{\"type\": \"DualRelativeEntropyCone\", \"dimension\": 3}"],
+                "required": ["dimension"],
+                "properties": {
+                    "type": {"const": "DualRelativeEntropyCone"},
+                    "dimension": {"type": "integer", "minimum": 3}
+                }
             }, {
                 "description": "(t, X) ∈ {R^{1+row_dim×column_dim}: t ≥ σ₁(X)}",
                 "examples": ["{\"type\": \"NormSpectralCone\", \"row_dim\": 1, \"column_dim\": 2}"],
diff --git a/src/FileFormats/MOF/read.jl b/src/FileFormats/MOF/read.jl
index d09be11d27..963fc90215 100644
--- a/src/FileFormats/MOF/read.jl
+++ b/src/FileFormats/MOF/read.jl
@@ -497,6 +497,7 @@ end
     NormInfinityCone,
     NormCone,
     RelativeEntropyCone,
+    DualRelativeEntropyCone,
     NormSpectralCone,
     NormNuclearCone,
     RootDetConeTriangle,
@@ -632,6 +633,10 @@ function set_to_moi(::Val{:RelativeEntropyCone}, object::Dict)
     return MOI.RelativeEntropyCone(object["dimension"])
 end
 
+function set_to_moi(::Val{:DualRelativeEntropyCone}, object::Dict)
+    return MOI.DualRelativeEntropyCone(object["dimension"])
+end
+
 function set_to_moi(::Val{:NormSpectralCone}, object::Dict)
     return MOI.NormSpectralCone(object["row_dim"], object["column_dim"])
 end
diff --git a/src/FileFormats/MOF/write.jl b/src/FileFormats/MOF/write.jl
index 6cd60e469d..3e4dfc2c43 100644
--- a/src/FileFormats/MOF/write.jl
+++ b/src/FileFormats/MOF/write.jl
@@ -479,6 +479,7 @@ head_name(::Type{MOI.NormOneCone}) = "NormOneCone"
 head_name(::Type{MOI.NormInfinityCone}) = "NormInfinityCone"
 head_name(::Type{MOI.NormCone}) = "NormCone"
 head_name(::Type{MOI.RelativeEntropyCone}) = "RelativeEntropyCone"
+head_name(::Type{MOI.DualRelativeEntropyCone}) = "DualRelativeEntropyCone"
 head_name(::Type{MOI.NormSpectralCone}) = "NormSpectralCone"
 head_name(::Type{MOI.NormNuclearCone}) = "NormNuclearCone"
 head_name(::Type{MOI.RootDetConeTriangle}) = "RootDetConeTriangle"
diff --git a/test/FileFormats/MOF/test_MOF.jl b/test/FileFormats/MOF/test_MOF.jl
index bc984e51fd..e274faabcc 100644
--- a/test/FileFormats/MOF/test_MOF.jl
+++ b/test/FileFormats/MOF/test_MOF.jl
@@ -1045,6 +1045,18 @@ function test_RelativeEntropyCone()
     )
 end
 
+function test_DualRelativeEntropyCone()
+    return _test_model_equality(
+        """
+        variables: x, y, z
+        minobjective: x
+        c1: [x, y, z] in DualRelativeEntropyCone(3)
+        """,
+        ["x", "y", "z"],
+        ["c1"],
+    )
+end
+
 function test_NormSpectralCone()
     return _test_model_equality(
         """