diff --git a/package-lock.json b/package-lock.json
index 2f87f267..7e91f1d3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
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         "@ethersproject/wallet": "^5.6.2",
         "@keplr-wallet/wc-client": "^0.11.63",
@@ -493,34 +493,34 @@
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-        "@cosmjs/math": "0.28.7",
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@@ -537,31 +537,31 @@
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+        "@cosmjs/crypto": "^0.31.3",
+        "@cosmjs/encoding": "^0.31.3",
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@@ -730,9 +730,9 @@
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@@ -6258,6 +6258,11 @@
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+      "resolved": "https://registry.npmjs.org/libsodium-sumo/-/libsodium-sumo-0.7.13.tgz",
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@@ -6266,6 +6271,14 @@
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@@ -9771,34 +9784,34 @@
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-        "@cosmjs/math": "0.28.7",
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-        "@cosmjs/math": "0.28.7",
-        "@cosmjs/utils": "0.28.7",
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         "bn.js": "^5.2.0",
-        "elliptic": "^6.5.3",
-        "libsodium-wrappers": "^0.7.6"
+        "elliptic": "^6.5.4",
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+      "resolved": "https://registry.npmjs.org/@cosmjs/encoding/-/encoding-0.31.3.tgz",
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@@ -9815,31 +9828,31 @@
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+        "@cosmjs/crypto": "^0.31.3",
+        "@cosmjs/encoding": "^0.31.3",
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+          "resolved": "https://registry.npmjs.org/cosmjs-types/-/cosmjs-types-0.8.0.tgz",
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@@ -10014,9 +10027,9 @@
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+      "resolved": "https://registry.npmjs.org/@cosmjs/utils/-/utils-0.31.3.tgz",
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@@ -14001,6 +14014,11 @@
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     },
+    "libsodium-sumo": {
+      "version": "0.7.13",
+      "resolved": "https://registry.npmjs.org/libsodium-sumo/-/libsodium-sumo-0.7.13.tgz",
+      "integrity": "sha512-zTGdLu4b9zSNLfovImpBCbdAA4xkpkZbMnSQjP8HShyOutnGjRHmSOKlsylh1okao6QhLiz7nG98EGn+04cZjQ=="
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@@ -14009,6 +14027,14 @@
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+    "libsodium-wrappers-sumo": {
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+      "resolved": "https://registry.npmjs.org/libsodium-wrappers-sumo/-/libsodium-wrappers-sumo-0.7.13.tgz",
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diff --git a/package.json b/package.json
index 87d8fafc..6f1114e6 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
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-    "@cosmjs/proto-signing": "^0.28.1",
+    "@cosmjs/proto-signing": "^0.31.3",
     "@cosmjs/stargate": "^0.30.1",
     "@ethersproject/wallet": "^5.6.2",
     "@keplr-wallet/wc-client": "^0.11.63",