diff --git a/zksnarks/semaphore/package-lock.json b/zksnarks/semaphore/package-lock.json
index 57ebcc3..2aecbf8 100644
--- a/zksnarks/semaphore/package-lock.json
+++ b/zksnarks/semaphore/package-lock.json
@@ -157,6 +157,11 @@
       "resolved": "https://registry.npmjs.org/chardet/-/chardet-0.7.0.tgz",
       "integrity": "sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA=="
     },
+    "charenc": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/charenc/-/charenc-0.0.2.tgz",
+      "integrity": "sha1-wKHS86cJLgN3S/qD8UwPxXkKhmc="
+    },
     "check-error": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
@@ -279,6 +284,11 @@
         "which": "^1.2.9"
       }
     },
+    "crypt": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/crypt/-/crypt-0.0.2.tgz",
+      "integrity": "sha1-iNf/fsDfuG9xPch7u0LQRNPmxBs="
+    },
     "debug": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
@@ -1375,6 +1385,15 @@
       "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
       "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc="
     },
+    "sha1": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/sha1/-/sha1-1.1.1.tgz",
+      "integrity": "sha1-rdqnqTFo85PxnrKxUJFhjicA+Eg=",
+      "requires": {
+        "charenc": ">= 0.0.1",
+        "crypt": ">= 0.0.1"
+      }
+    },
     "sha3": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/sha3/-/sha3-1.2.3.tgz",