diff --git a/package-lock.json b/package-lock.json
index aa3ec27..0106d5a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -632,17 +632,18 @@
       }
     },
     "circom": {
-      "version": "0.5.8",
-      "resolved": "https://registry.npmjs.org/circom/-/circom-0.5.8.tgz",
-      "integrity": "sha512-NTp5R3qiNdtuF0SzZlnuKabrGRySR+uNK1+5ZIIpHUPLzIPXwle7sha/Jz1RDyHtV/z8yZNNVm6PXVoYuvnR3A==",
+      "version": "0.5.9",
+      "resolved": "https://registry.npmjs.org/circom/-/circom-0.5.9.tgz",
+      "integrity": "sha512-SCJoY2FoVpFsRlRcmRgLP5ko0jSxREAmQh7CM6gQ6V9KI5wXm8vR+5phj6wek/p0TnO5s3wR88JPMfjAm8P2Mw==",
       "requires": {
         "chai": "^4.2.0",
         "circom_runtime": "0.0.5",
+        "fastfile": "0.0.1",
         "ffiasm": "0.0.2",
         "ffjavascript": "0.1.0",
         "ffwasm": "0.0.7",
         "fnv-plus": "^1.3.1",
-        "r1csfile": "0.0.4",
+        "r1csfile": "0.0.5",
         "tmp-promise": "^2.0.2",
         "wasmbuilder": "0.0.10"
       }
@@ -1753,6 +1754,11 @@
       "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=",
       "dev": true
     },
+    "fastfile": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/fastfile/-/fastfile-0.0.1.tgz",
+      "integrity": "sha512-Fk8PWafGWGEUw7oPq/dJen92ASxknCEy4ZC8n4VEvSwCp/jcReyEmVoWsRIWTf+IvAp2MzvFi54vOPeK2LQZtQ=="
+    },
     "fd-slicer": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/fd-slicer/-/fd-slicer-1.1.0.tgz",
@@ -3955,10 +3961,11 @@
       }
     },
     "r1csfile": {
-      "version": "0.0.4",
-      "resolved": "https://registry.npmjs.org/r1csfile/-/r1csfile-0.0.4.tgz",
-      "integrity": "sha512-1Y/zzzEjQVTR/gPlduRaKi2K+yU+UxqtsS+obDLEEb4WAzwCkKGybRfp037CUW5OApeleS1WdGmtKv9K9FPhsA==",
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/r1csfile/-/r1csfile-0.0.5.tgz",
+      "integrity": "sha512-B+BdKPb/WUTp4N/3X4d1Spgx9Ojx5tFVejGZRJxpTtzq34mC8Vi/czWfiPj85V8kud31lCfYcZ16z7+czvM0Sw==",
       "requires": {
+        "fastfile": "0.0.1",
         "ffjavascript": "0.1.0"
       }
     },
diff --git a/package.json b/package.json
index 8c18a7f..aa00797 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
   "dependencies": {
     "blake-hash": "^1.1.0",
     "blake2b": "^2.1.3",
-    "circom": "0.5.8",
+    "circom": "0.5.9",
     "ffjavascript": "0.1.0",
     "web3": "^1.2.6"
   },