diff --git a/build/makefile_base.mak b/build/makefile_base.mak
index 99fd4be7..812dfede 100644
--- a/build/makefile_base.mak
+++ b/build/makefile_base.mak
@@ -781,6 +781,7 @@ LIBERATION_SANS_REGULAR_SFD = LiberationSans-Regular.sfd
 LIBERATION_SANS_BOLD_SFD = LiberationSans-Bold.sfd
 LIBERATION_SERIF_REGULAR_SFD = LiberationSerif-Regular.sfd
 LIBERATION_MONO_REGULAR_SFD = LiberationMono-Regular.sfd
+LIBERATION_MONO_BOLD_SFD = LiberationMono-Bold.sfd
 
 SOURCE_HAN_SANS_REGULAR_CIDFONTINFO = $(SOURCE_HAN_SANS_SRCDIR)/cidfontinfo.OTC.SC
 SOURCE_HAN_SANS_REGULAR_CIDFONT = $(SOURCE_HAN_SANS_SRCDIR)/cidfont.ps.OTC.SC
@@ -793,11 +794,14 @@ LIBERATION_SANS_REGULAR_TTF = $(addprefix $(FONTS_OBJ)/, $(LIBERATION_SANS_REGUL
 LIBERATION_SANS_BOLD_TTF = $(addprefix $(FONTS_OBJ)/, $(LIBERATION_SANS_BOLD_SFD:.sfd=.ttf))
 LIBERATION_SERIF_REGULAR_TTF = $(addprefix $(FONTS_OBJ)/, $(LIBERATION_SERIF_REGULAR_SFD:.sfd=.ttf))
 LIBERATION_MONO_REGULAR_TTF = $(addprefix $(FONTS_OBJ)/, $(LIBERATION_MONO_REGULAR_SFD:.sfd=.ttf))
+LIBERATION_MONO_BOLD_TTF = $(addprefix $(FONTS_OBJ)/, $(LIBERATION_MONO_BOLD_SFD:.sfd=.ttf))
 SOURCE_HAN_SANS_REGULAR_OTF = $(FONTS_OBJ)/SourceHanSansSCRegular.otf
 
-LIBERATION_SFDS = $(LIBERATION_SANS_REGULAR_SFD) $(LIBERATION_SANS_BOLD_SFD) $(LIBERATION_SERIF_REGULAR_SFD) $(LIBERATION_MONO_REGULAR_SFD)
+LIBERATION_SFDS = $(LIBERATION_SANS_REGULAR_SFD) $(LIBERATION_SANS_BOLD_SFD) $(LIBERATION_SERIF_REGULAR_SFD) $(LIBERATION_MONO_REGULAR_SFD) \
+            $(LIBERATION_MONO_BOLD_SFD)
 FONT_TTFS = $(LIBERATION_SANS_REGULAR_TTF) $(LIBERATION_SANS_BOLD_TTF) \
-            $(LIBERATION_SERIF_REGULAR_TTF) $(LIBERATION_MONO_REGULAR_TTF)
+            $(LIBERATION_SERIF_REGULAR_TTF) $(LIBERATION_MONO_REGULAR_TTF) \
+            $(LIBERATION_MONO_BOLD_TTF)
 FONTS_SRC = $(FONT_TTFS:.ttf=.sfd)
 
 #The use of "Arial" here is for compatibility with programs that require that exact string. This font is not Arial.
@@ -817,6 +821,10 @@ $(LIBERATION_MONO_REGULAR_TTF): $(FONTS_SRC) $(FONTSCRIPT)
 	patch $(@:.ttf=.sfd) $(FONTS)/patches/$(LIBERATION_MONO_REGULAR_SFD:.sfd=.patch)
 	$(FONTFORGE) -script $(FONTSCRIPT) $(@:.ttf=.sfd) "CourierNew" "Courier New" "Courier New"
 
+#The use of "Courier New" here is for compatibility with programs that require that exact string. This font is not Courier New.
+$(LIBERATION_MONO_BOLD_TTF): $(FONTS_SRC) $(FONTSCRIPT)
+	$(FONTFORGE) -script $(FONTSCRIPT) $(@:.ttf=.sfd) "CourierNewPS-BoldMT" "Courier New" "Courier New Bold"
+
 #The use of "YaHei" for compatibility with programs that require that exact string. This font is not Microsoft YaHei.
 $(SOURCE_HAN_SANS_REGULAR_OTF): $(SOURCE_HAN_SANS_REGULAR_CIDFONTINFO) $(SOURCE_HAN_SANS_REGULAR_CIDFONT) \
 		$(SOURCE_HAN_SANS_REGULAR_FEATURES) $(SOURCE_HAN_SANS_REGULAR_SEQUENCES) $(SOURCE_HAN_SANS_REGULAR_UNISOURCE) $(YAHEI_MENUNAMEDB)
@@ -834,7 +842,7 @@ $(FONTS_SRC): $(FONTS_OBJ)
 
 fonts: $(LIBERATION_SANS_REGULAR_TTF) $(LIBERATION_SANS_BOLD_TTF) \
        $(LIBERATION_SERIF_REGULAR_TTF) $(LIBERATION_MONO_REGULAR_TTF) \
-       $(SOURCE_HAN_SANS_REGULAR_OTF) | $(FONTS_SRC)
+       $(LIBERATION_MONO_BOLD_TTF) $(SOURCE_HAN_SANS_REGULAR_OTF) | $(FONTS_SRC)
 
 ##
 ## Targets
diff --git a/proton b/proton
index b3df1c35..15ad0acd 100755
--- a/proton
+++ b/proton
@@ -396,6 +396,7 @@ class CompatData:
             ( "LiberationSans-Bold.ttf", "arialbd.ttf" ),
             ( "LiberationSerif-Regular.ttf", "times.ttf" ),
             ( "LiberationMono-Regular.ttf", "cour.ttf" ),
+            ( "LiberationMono-Bold.ttf", "courbd.ttf" ),
             ( "SourceHanSansSCRegular.otf", "msyh.ttf" ),
         ]