diff --git a/assets/TeXFonts.8xv b/assets/TeXFonts.8xv
index 656f2f7..a37aea9 100644
Binary files a/assets/TeXFonts.8xv and b/assets/TeXFonts.8xv differ
diff --git a/assets/TeXScrpt.8xv b/assets/TeXScrpt.8xv
index 598e068..b5911fd 100644
Binary files a/assets/TeXScrpt.8xv and b/assets/TeXScrpt.8xv differ
diff --git a/include/texfont.h b/include/texfont.h
index ca1d722..20d4693 100644
--- a/include/texfont.h
+++ b/include/texfont.h
@@ -213,5 +213,9 @@
 #define TEXFONT_BOTTOM_CHAR '\303'
 #define TEXFONT_SUPSET "\304"
 #define TEXFONT_SUPSET_CHAR '\304'
+#define TEXFONT_ARROW_UP "\305"
+#define TEXFONT_ARROW_UP_CHAR '\305'
+#define TEXFONT_ARROW_DOWN "\306"
+#define TEXFONT_ARROW_DOWN_CHAR '\306'
 
 #endif /* TEXFONT_H */
diff --git a/src/tex/tex_symbols.c b/src/tex/tex_symbols.c
index 988ab58..766bbd5 100644
--- a/src/tex/tex_symbols.c
+++ b/src/tex/tex_symbols.c
@@ -64,6 +64,7 @@ static const MapEnt g_map[] = {
 	{ "dim", SYMC_FUNC_DIM, SYM_FUNC },
 	{ "div", GL(TEXFONT_DIVIDE_CHAR), SYM_GLYPH },
 	{ "dot", SYMC_ACC_DOT, SYM_ACCENT },
+	{ "downarrow", GL(TEXFONT_ARROW_DOWN_CHAR), SYM_GLYPH },
 	{ "ell", GL(TEXFONT_ELL_CHAR), SYM_GLYPH },
 	{ "emptyset", GL(TEXFONT_EMPTY_SET_CHAR), SYM_GLYPH },
 	{ "end", SYMC_END, SYM_STRUCT },
@@ -171,6 +172,7 @@ static const MapEnt g_map[] = {
 	{ "top", GL(TEXFONT_TOP_CHAR), SYM_GLYPH },
 	{ "underbrace", SYMC_UNDERBRACE, SYM_STRUCT },
 	{ "underline", SYMC_ACC_UNDERLINE, SYM_ACCENT },
+	{ "uparrow", GL(TEXFONT_ARROW_UP_CHAR), SYM_GLYPH },
 	{ "upsilon", GL(TEXFONT_upsilon_CHAR), SYM_GLYPH },
 	{ "vec", SYMC_ACC_VEC, SYM_ACCENT },
 	{ "vee", GL(TEXFONT_LOGICAL_OR_CHAR), SYM_GLYPH },
diff --git a/tests/test_symbols.c b/tests/test_symbols.c
index 04562d6..74ec7ab 100644
--- a/tests/test_symbols.c
+++ b/tests/test_symbols.c
@@ -45,6 +45,8 @@ int main(void)
 	check_sym("langle", SYM_GLYPH, TEXFONT_LANGLE_CHAR);
 	check_sym("rangle", SYM_GLYPH, TEXFONT_RANGLE_CHAR);
 	check_sym("supset", SYM_GLYPH, TEXFONT_SUPSET_CHAR);
+	check_sym("uparrow", SYM_GLYPH, TEXFONT_ARROW_UP_CHAR);
+	check_sym("downarrow", SYM_GLYPH, TEXFONT_ARROW_DOWN_CHAR);
 
 	// Structural
 	SymbolDesc d;
diff --git a/tools/process_fonts.py b/tools/process_fonts.py
old mode 100755
new mode 100644
index 1c9ad57..8032c90
--- a/tools/process_fonts.py
+++ b/tools/process_fonts.py
@@ -87,7 +87,7 @@
     0x2295,  # ⊕ Circled plus (oplus)
 ]
 
-# The Master Symbol List (0x80 - 0xC4).
+# The Master Symbol List (0x80 - 0xC6).
 SYMBOLS = [
     # Greek Lower
     0x03B1, 0x03B2, 0x03B3, 0x03B4, 0x03B5, 0x03B6, 0x03B7, 0x03B8,
@@ -110,6 +110,8 @@
     # Boolean logic
     0x2227, 0x2228, 0x00AC, 0x21D2, 0x21D4, 0x22A4, 0x22A5,
     0x2283,  # Superset / material-implication horseshoe (\supset)
+    0x2191,  # Up arrow / Sheffer stroke for NAND (\uparrow)
+    0x2193,  # Down arrow / Peirce arrow for NOR (\downarrow)
 ]