diff --git a/source/development/jublonet/Hack-Regular.ufo/glyphs/U_breve.glif b/source/development/jublonet/Hack-Regular.ufo/glyphs/U_breve.glif
new file mode 100644
index 000000000..9350b7308
--- /dev/null
+++ b/source/development/jublonet/Hack-Regular.ufo/glyphs/U_breve.glif
@@ -0,0 +1,70 @@
+
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+
+
+ Ubreve
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diff --git a/source/development/jublonet/Hack-Regular.ufo/glyphs/contents.plist b/source/development/jublonet/Hack-Regular.ufo/glyphs/contents.plist
index 654535695..d9f1957b3 100644
--- a/source/development/jublonet/Hack-Regular.ufo/glyphs/contents.plist
+++ b/source/development/jublonet/Hack-Regular.ufo/glyphs/contents.plist
@@ -338,6 +338,8 @@
U_.glif
Uacute
U_acute.glif
+ Ubreve
+ U_breve.glif
Ucircumflex
U_circumflex.glif
Udieresis
@@ -1072,6 +1074,8 @@
u.glif
uacute
uacute.glif
+ ubreve
+ ubreve.glif
ucircumflex
ucircumflex.glif
udieresis
diff --git a/source/development/jublonet/Hack-Regular.ufo/glyphs/ubreve.glif b/source/development/jublonet/Hack-Regular.ufo/glyphs/ubreve.glif
new file mode 100644
index 000000000..e526c4022
--- /dev/null
+++ b/source/development/jublonet/Hack-Regular.ufo/glyphs/ubreve.glif
@@ -0,0 +1,51 @@
+
+
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+
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+ ubreve
+
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diff --git a/source/development/jublonet/Hack-Regular.ufo/lib.plist b/source/development/jublonet/Hack-Regular.ufo/lib.plist
index 54c7f833e..07819d2e8 100644
--- a/source/development/jublonet/Hack-Regular.ufo/lib.plist
+++ b/source/development/jublonet/Hack-Regular.ufo/lib.plist
@@ -1571,6 +1571,8 @@
ldot
tcedilla
musicalnote
+ Ubreve
+ ubreve