diff --git a/CHANGELOG.md b/CHANGELOG.md
index b80ae0a..0f82b60 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,14 @@ The format is based on [Keep a Changelog], and this project adheres to
 
 Nothing!
 
+## [1.8.1]
+
+### Changed
+
+- `isFixedPitch` is now being set to 1 for CozetteVector, and the OS/2
+ `panose` table specifies proportion as monospace which should hopefully fix
+  the font not being detected as monospace under Windows and kitty-term. 
+
 ## [1.8.0+zipbuild]
 
 ### Added
diff --git a/Cozette/Cozette.sfd b/Cozette/Cozette.sfd
index a398de9..f2939d1 100644
--- a/Cozette/Cozette.sfd
+++ b/Cozette/Cozette.sfd
@@ -4,7 +4,7 @@ FullName: Cozette
 FamilyName: Cozette
 Weight: Medium
 Copyright: (c) 2020 Slavfox
-Version: 1.080
+Version: 1.081
 ItalicAngle: 0
 UnderlinePosition: -100
 UnderlineWidth: 50
@@ -22,7 +22,7 @@ OS2Version: 1
 OS2_WeightWidthSlopeOnly: 0
 OS2_UseTypoMetrics: 0
 CreationTime: -2082812035
-ModificationTime: 1586169290
+ModificationTime: 1590569378
 PfmFamily: 49
 TTFWeight: 500
 TTFWidth: 5
@@ -11588,7 +11588,7 @@ Flags: W
 LayerCount: 2
 EndChar
 EndChars
-BitmapFont: 13 1643 10 3 1
+BitmapFont: 13 1644 10 3 1
 BDFStartProperties: 42
 FONT 1 "-slavfox-Cozette-Medium-R-Normal--13-120-75-75-M-60-ISO10646-1"
 COMMENT 0 "(c) 2020 Slavfox"
@@ -11610,7 +11610,7 @@ FONTNAME_REGISTRY 16 ""
 FONT_NAME 16 "Cozette"
 FACE_NAME 16 "Cozette"
 COPYRIGHT 16 "(c) 2020 Slavfox"
-FONT_VERSION 16 "1.080"
+FONT_VERSION 16 "1.081"
 FONT_ASCENT 18 10
 FONT_DESCENT 18 3
 UNDERLINE_POSITION 18 -19
diff --git a/cozette_builder/ttfbuilder.py b/cozette_builder/ttfbuilder.py
index de113a0..5f93634 100644
--- a/cozette_builder/ttfbuilder.py
+++ b/cozette_builder/ttfbuilder.py
@@ -1,6 +1,6 @@
 from pathlib import Path
 
-from fontTools.fontBuilder import FontBuilder  # type: ignore
+from fontTools.fontBuilder import FontBuilder, _panoseDefaults  # type: ignore
 
 from cozette_builder.bdffont import BdfFont
 
@@ -90,7 +90,14 @@ class TTFBuilder:
         self.fb.setupHorizontalHeader(ascent=ascent, descent=-descent)
         self.fb.setupNameTable(namestrings)
         self.fb.setupOS2(
-            sTypoAscender=ascent, usWinAscent=ascent, usWinDescent=descent
+            sTypoAscender=ascent,
+            usWinAscent=ascent,
+            usWinDescent=descent,
+            panose={
+                **_panoseDefaults,
+                "bFamilyType": 2,  # Text and display
+                "bProportion": 9  # Monospace
+            }
         )
-        self.fb.setupPost()
+        self.fb.setupPost(isFixedPitch=1)
         self.fb.save(output_path)