diff --git a/fonts/variable/MonaSansVF-Condensed[opsz,wght,ital].ttf b/fonts/variable/MonaSansVF-Condensed[opsz,wght,ital].ttf
index 46bcc414..a6fa71ad 100644
Binary files a/fonts/variable/MonaSansVF-Condensed[opsz,wght,ital].ttf and b/fonts/variable/MonaSansVF-Condensed[opsz,wght,ital].ttf differ
diff --git a/fonts/variable/MonaSansVF-Expanded[opsz,wght,ital].ttf b/fonts/variable/MonaSansVF-Expanded[opsz,wght,ital].ttf
index abcbc41a..5499f8b7 100644
Binary files a/fonts/variable/MonaSansVF-Expanded[opsz,wght,ital].ttf and b/fonts/variable/MonaSansVF-Expanded[opsz,wght,ital].ttf differ
diff --git a/fonts/variable/MonaSansVF-Italic[opsz,wght].ttf b/fonts/variable/MonaSansVF-Italic[opsz,wght].ttf
index 780ead7a..1da879eb 100644
Binary files a/fonts/variable/MonaSansVF-Italic[opsz,wght].ttf and b/fonts/variable/MonaSansVF-Italic[opsz,wght].ttf differ
diff --git a/fonts/variable/MonaSansVF-Italic[wdth,opsz,wght].ttf b/fonts/variable/MonaSansVF-Italic[wdth,opsz,wght].ttf
index e2241986..b9d00d27 100644
Binary files a/fonts/variable/MonaSansVF-Italic[wdth,opsz,wght].ttf and b/fonts/variable/MonaSansVF-Italic[wdth,opsz,wght].ttf differ
diff --git a/fonts/variable/MonaSansVF[opsz,wght].ttf b/fonts/variable/MonaSansVF[opsz,wght].ttf
index 386181a3..9724e229 100644
Binary files a/fonts/variable/MonaSansVF[opsz,wght].ttf and b/fonts/variable/MonaSansVF[opsz,wght].ttf differ
diff --git a/fonts/variable/MonaSansVF[wdth,opsz,wght].ttf b/fonts/variable/MonaSansVF[wdth,opsz,wght].ttf
index d4151b25..5d33f4fb 100644
Binary files a/fonts/variable/MonaSansVF[wdth,opsz,wght].ttf and b/fonts/variable/MonaSansVF[wdth,opsz,wght].ttf differ
diff --git a/fonts/variable/MonaSansVF[wdth,wght,opsz,ital].ttf b/fonts/variable/MonaSansVF[wdth,wght,opsz,ital].ttf
index 3eecc2f1..3aaea1b5 100644
Binary files a/fonts/variable/MonaSansVF[wdth,wght,opsz,ital].ttf and b/fonts/variable/MonaSansVF[wdth,wght,opsz,ital].ttf differ
diff --git a/sources/MonaSans.glyphspackage/fontinfo.plist b/sources/MonaSans.glyphspackage/fontinfo.plist
index 184a137e..82247f98 100644
--- a/sources/MonaSans.glyphspackage/fontinfo.plist
+++ b/sources/MonaSans.glyphspackage/fontinfo.plist
@@ -6122,6 +6122,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6181,6 +6182,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6236,6 +6238,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6303,6 +6306,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6366,6 +6370,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6429,6 +6434,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6492,6 +6498,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6562,6 +6569,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6628,6 +6636,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6700,6 +6709,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
diff --git a/sources/README.md b/sources/README.md
index cbdd741e..f808c0aa 100644
--- a/sources/README.md
+++ b/sources/README.md
@@ -10,6 +10,8 @@ Mona Sans VF is exported from the Glyphs interface directly into the /fonts dire
 
 Running `build.sh` will try to move them to the right place, if you don't put them there already.
 
+The variable export settings use an ExtraLight master (`wght=200`) as their Variable Font Origin, so their weight class must also remain 200. If the exported OS/2 weight is 400, Fontconfig treats ExtraLight as Regular and shifts every named weight.
+
 ### Google Fonts Build (`build.sh`)
 
 The `build.sh` script handles building font files that meet Google Fonts specifications and requirements, and builds into the `/googlefonts` folder. It also checks to make sure the other fonts are in the right place.