diff --git a/flake.nix b/flake.nix
index 44cd951..966cecf 100644
--- a/flake.nix
+++ b/flake.nix
@@ -113,8 +113,10 @@
           # Delete openapi.yaml from the extra-source-files
           ${pkgs.gnused}/bin/sed -i '/^\s*openapi\.yaml$/d' "${dir}/docker-engine.cabal"
 
-          # Patch up some problems
-          echo "type Map = A.Object" >> "${dir}/lib/DockerEngine/Model.hs"
+          # Patch up some problems.
+          # This "Map" type is emitted for the "Topology" definition. Not sure how to correct
+          # the spec, so let's just provide a type alias here.
+          echo "type Map = HM.HashMap String String" >> "${dir}/lib/DockerEngine/Model.hs"
         '';
 
       in
diff --git a/v1.36/lib/DockerEngine/Model.hs b/v1.36/lib/DockerEngine/Model.hs
index 68009ae..3135270 100644
--- a/v1.36/lib/DockerEngine/Model.hs
+++ b/v1.36/lib/DockerEngine/Model.hs
@@ -9652,4 +9652,4 @@ toTaskState = \case
 
 
 
-type Map = A.Object
+type Map = HM.HashMap String String
diff --git a/v1.37/lib/DockerEngine/Model.hs b/v1.37/lib/DockerEngine/Model.hs
index fe25046..faaa0ea 100644
--- a/v1.37/lib/DockerEngine/Model.hs
+++ b/v1.37/lib/DockerEngine/Model.hs
@@ -9663,4 +9663,4 @@ toTaskState = \case
 
 
 
-type Map = A.Object
+type Map = HM.HashMap String String
diff --git a/v1.38/lib/DockerEngine/Model.hs b/v1.38/lib/DockerEngine/Model.hs
index 6e64cf1..1ed9484 100644
--- a/v1.38/lib/DockerEngine/Model.hs
+++ b/v1.38/lib/DockerEngine/Model.hs
@@ -9772,4 +9772,4 @@ toTaskState = \case
 
 
 
-type Map = A.Object
+type Map = HM.HashMap String String
diff --git a/v1.39/lib/DockerEngine/Model.hs b/v1.39/lib/DockerEngine/Model.hs
index 0823d4c..cc692f8 100644
--- a/v1.39/lib/DockerEngine/Model.hs
+++ b/v1.39/lib/DockerEngine/Model.hs
@@ -10194,4 +10194,4 @@ toTaskState = \case
 
 
 
-type Map = A.Object
+type Map = HM.HashMap String String
diff --git a/v1.40/lib/DockerEngine/Model.hs b/v1.40/lib/DockerEngine/Model.hs
index 0f55a83..3d5ea2c 100644
--- a/v1.40/lib/DockerEngine/Model.hs
+++ b/v1.40/lib/DockerEngine/Model.hs
@@ -10382,4 +10382,4 @@ toTaskState = \case
 
 
 
-type Map = A.Object
+type Map = HM.HashMap String String
diff --git a/v1.41/lib/DockerEngine/Model.hs b/v1.41/lib/DockerEngine/Model.hs
index c082b3c..40fcec2 100644
--- a/v1.41/lib/DockerEngine/Model.hs
+++ b/v1.41/lib/DockerEngine/Model.hs
@@ -10756,4 +10756,4 @@ toTaskState = \case
 
 
 
-type Map = A.Object
+type Map = HM.HashMap String String
diff --git a/v1.42/lib/DockerEngine/Model.hs b/v1.42/lib/DockerEngine/Model.hs
index 1a97ab6..209ce59 100644
--- a/v1.42/lib/DockerEngine/Model.hs
+++ b/v1.42/lib/DockerEngine/Model.hs
@@ -11282,4 +11282,4 @@ toTaskState = \case
 
 
 
-type Map = A.Object
+type Map = HM.HashMap String String
diff --git a/v1.43/lib/DockerEngine/Model.hs b/v1.43/lib/DockerEngine/Model.hs
index 79dcf28..8f937b4 100644
--- a/v1.43/lib/DockerEngine/Model.hs
+++ b/v1.43/lib/DockerEngine/Model.hs
@@ -11315,4 +11315,4 @@ toTaskState = \case
 
 
 
-type Map = A.Object
+type Map = HM.HashMap String String
diff --git a/v1.44/lib/DockerEngine/Model.hs b/v1.44/lib/DockerEngine/Model.hs
index 3096bee..29fad9e 100644
--- a/v1.44/lib/DockerEngine/Model.hs
+++ b/v1.44/lib/DockerEngine/Model.hs
@@ -11506,4 +11506,4 @@ toTaskState = \case
 
 
 
-type Map = A.Object
+type Map = HM.HashMap String String