diff --git a/package-lock.json b/package-lock.json
index 0673bfe1..3e68fa46 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,7 +15,7 @@
         "moment-of-symmetry": "^0.8.3",
         "pinia": "^2.1.7",
         "qs": "^6.12.3",
-        "sonic-weave": "^0.10.6",
+        "sonic-weave": "^0.10.7",
         "sw-synth": "^0.1.1",
         "values.js": "^2.1.1",
         "vue": "^3.3.4",
@@ -5417,9 +5417,9 @@
       }
     },
     "node_modules/sonic-weave": {
-      "version": "0.10.6",
-      "resolved": "https://registry.npmjs.org/sonic-weave/-/sonic-weave-0.10.6.tgz",
-      "integrity": "sha512-tYqD89RQ0utvCZ2uRiGB1CpOIlCcdyn3XUF6+8WF/h65mlWI3cxrbEEjx8cHu1ohhTuk7eOWM3fhpw8wotTVsw==",
+      "version": "0.10.7",
+      "resolved": "https://registry.npmjs.org/sonic-weave/-/sonic-weave-0.10.7.tgz",
+      "integrity": "sha512-oHO46B93CyTDwoywajD8SutP9gXJI6n2Mt192FeAg4H6YolRynVL64dZ+yWcRuO/G60Ed4XeVMDt+A/LEO4qHA==",
       "dependencies": {
         "moment-of-symmetry": "^0.8.3",
         "xen-dev-utils": "^0.11.0"
diff --git a/package.json b/package.json
index 3c0330df..0128faca 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "moment-of-symmetry": "^0.8.3",
     "pinia": "^2.1.7",
     "qs": "^6.12.3",
-    "sonic-weave": "^0.10.6",
+    "sonic-weave": "^0.10.7",
     "sw-synth": "^0.1.1",
     "values.js": "^2.1.1",
     "vue": "^3.3.4",
diff --git a/src/character-palette.json b/src/character-palette.json
index d40f5a3f..e65516dd 100644
--- a/src/character-palette.json
+++ b/src/character-palette.json
@@ -8,6 +8,12 @@
   "𝄲": "Quarter sharp sign. Raises pitch by <code>sqrt(2187/2048)</code>.",
   "‡": "Quarter sharp sign. Raises pitch by <code>sqrt(2187/2048)</code>.",
   "𝄳": "Quarter flat sign. Lowers pitch by <code>sqrt(2187/2048)</code>.",
+  "𝄮": "Syntonic up sign. Raises pitch by <code>81/80</code>.",
+  "𝄯": "Syntonic down sign. Lowers pitch by <code>81/80</code>.",
+  "𝄱": "Sharp syntonic down sign. Raises pitch by <code>135/128</code>.",
+  "𝄬": "Flat syntonic up sign. Lowers pitch by <code>135/128</code>.",
+  "𝄰": "Sharp syntonic up sign. Raises pitch by <code>177147/163840</code>.",
+  "𝄭": "Flat syntonic down sign. Lowers pitch by <code>177147/163840</code>.",
   "½": "Semi-prefix. E.g. G semisharp four <code>G½♯4</code>, semimajor third <code>½M3</code>, perfect sesquith <code>P1½</code>.",
   "¼": "Quarter-prefix. E.g. E quarter flat four <code>E¼♭4</code>.",
   "¾": "Sesqui-semi-prefix. E.g. D sesqui semisharp four <code>D¾♯4</code>.",