diff --git a/Project.toml b/Project.toml
index ad59664..5f18172 100644
--- a/Project.toml
+++ b/Project.toml
@@ -6,5 +6,5 @@ version = "0.1.1"
 MathOptInterface = "b8f27783-ece8-5eb3-8dc8-9495eed66fee"
 
 [compat]
-MathOptInterface = "1.42.0"
+MathOptInterface = "1.43.0"
 julia = "1.6"
diff --git a/src/MathOptIIS.jl b/src/MathOptIIS.jl
index 8bdbf39..0faa6fb 100644
--- a/src/MathOptIIS.jl
+++ b/src/MathOptIIS.jl
@@ -12,4 +12,7 @@ include("bound.jl")
 include("range.jl")
 include("solver.jl")
 
+@deprecate ConflictCount MOI.ConflictCount
+@deprecate ConstraintConflictStatus MOI.ConstraintConflictStatus
+
 end # module MathOptIIS
diff --git a/src/iis.jl b/src/iis.jl
index 30463d9..ad037b5 100644
--- a/src/iis.jl
+++ b/src/iis.jl
@@ -200,30 +200,13 @@ function MOI.get(optimizer::Optimizer, ::MOI.ConflictStatus)
     return optimizer.status
 end
 
-function MOI.get(
-    optimizer::Optimizer,
-    ::MOI.ConstraintConflictStatus,
-    con::MOI.ConstraintIndex,
-)
-    return MOI.get(optimizer, ConstraintConflictStatus(1), con)
-end
-
-# this should be moved to MOI
-struct ConflictCount <: MOI.AbstractModelAttribute end
-
-function MOI.get(optimizer::Optimizer, ::ConflictCount)
+function MOI.get(optimizer::Optimizer, ::MOI.ConflictCount)
     return length(optimizer.results)
 end
 
-# the MOI version must be generalized
-struct ConstraintConflictStatus <: MOI.AbstractModelAttribute
-    conflict_index::Int
-    ConstraintConflictStatus(conflict_index = 1) = new(conflict_index)
-end
-
 function MOI.get(
     optimizer::Optimizer,
-    attr::ConstraintConflictStatus,
+    attr::MOI.ConstraintConflictStatus,
     con::MOI.ConstraintIndex,
 )
     if attr.conflict_index > length(optimizer.results)
diff --git a/test/runtests.jl b/test/runtests.jl
index 692be44..2e2050b 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -52,28 +52,28 @@ function test_bounds()
         MOI.ConstraintConflictStatus(),
         index(UpperBoundRef(y)),
     ) == MOI.IN_CONFLICT
-    @test MOI.get(solver, MOIIS.ConflictCount()) == 1
+    @test MOI.get(solver, MOI.ConflictCount()) == 1
     @test MOI.get(
         solver,
-        MOIIS.ConstraintConflictStatus(1),
+        MOI.ConstraintConflictStatus(1),
         index(LowerBoundRef(y)),
     ) == MOI.IN_CONFLICT
     @test MOI.get(
         solver,
-        MOIIS.ConstraintConflictStatus(1),
+        MOI.ConstraintConflictStatus(1),
         index(UpperBoundRef(y)),
     ) == MOI.IN_CONFLICT
-    @test MOI.get(solver, MOIIS.ConstraintConflictStatus(1), index(c)) ==
+    @test MOI.get(solver, MOI.ConstraintConflictStatus(1), index(c)) ==
           MOI.NOT_IN_CONFLICT
     # the next two could be errors
     @test MOI.get(
         solver,
-        MOIIS.ConstraintConflictStatus(2),
+        MOI.ConstraintConflictStatus(2),
         index(LowerBoundRef(y)),
     ) == MOI.NOT_IN_CONFLICT
     @test MOI.get(
         solver,
-        MOIIS.ConstraintConflictStatus(2),
+        MOI.ConstraintConflictStatus(2),
         index(UpperBoundRef(y)),
     ) == MOI.NOT_IN_CONFLICT
     #
@@ -749,6 +749,13 @@ function test_iis_binary()
     return
 end
 
+function test_deprecated()
+    @test (@test_deprecated MOIIS.ConflictCount()) == MOI.ConflictCount()
+    @test (@test_deprecated MOIIS.ConstraintConflictStatus(2)) ==
+          MOI.ConstraintConflictStatus(2)
+    return
+end
+
 end # module
 
 TestMathOptIIS.runtests()