diff --git a/.travis.yml b/.travis.yml
index ef55724..d15c72d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ os:
   - linux
   - osx
 install:
-  - npm install --global esy@0.4.9
+  - npm install --global esy@0.5.6
   - esy install
 script:
   - esy build
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 19e7437..9baaff0 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -4,4 +4,4 @@ RUN apt-get update \
   && DEBIAN_FRONTEND=noninteractive apt-get install -y nodejs npm git rsync m4 curl \
   && rm -rf /var/lib/apt/lists/*
 
-RUN npm i -g esy@0.4.9
+RUN npm i -g esy@0.5.6
diff --git a/esy.lock/index.json b/esy.lock/index.json
index 4df4e3d..3c16d2b 100644
--- a/esy.lock/index.json
+++ b/esy.lock/index.json
@@ -1,6 +1,6 @@
 {
-  "checksum": "52094406998daf0708d776164b283a3f",
-  "root": "bs-react-intl-extractor@link:./package.json",
+  "checksum": "8ac21041dbddbd672d8b4ee561f7b750",
+  "root": "bs-react-intl-extractor@link-dev:./package.json",
   "node": {
     "refmterr@3.1.10@d41d8cd9": {
       "id": "refmterr@3.1.10@d41d8cd9",
@@ -14,66 +14,70 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/re@opam:1.7.3@83095efd",
+        "ocaml@4.6.10@d41d8cd9", "@opam/re@opam:1.7.3@83095efd",
         "@opam/dune@opam:1.6.3@a7d7baed", "@esy-ocaml/reason@3.4.0@d41d8cd9"
       ],
       "devDependencies": []
     },
-    "ocaml@4.6.9@d41d8cd9": {
-      "id": "ocaml@4.6.9@d41d8cd9",
+    "ocaml@4.6.10@d41d8cd9": {
+      "id": "ocaml@4.6.10@d41d8cd9",
       "name": "ocaml",
-      "version": "4.6.9",
+      "version": "4.6.10",
       "source": {
         "type": "install",
         "source": [
-          "archive:https://registry.npmjs.org/ocaml/-/ocaml-4.6.9.tgz#sha1:4561135b32f59a5bafa8e91019a58515508d6e4c"
+          "archive:https://registry.npmjs.org/ocaml/-/ocaml-4.6.10.tgz#sha1:33c67d0275dc1aeba25b11557192aefcd3cf0a6a"
         ]
       },
       "overrides": [],
       "dependencies": [],
       "devDependencies": []
     },
-    "bs-react-intl-extractor@link:./package.json": {
-      "id": "bs-react-intl-extractor@link:./package.json",
+    "bs-react-intl-extractor@link-dev:./package.json": {
+      "id": "bs-react-intl-extractor@link-dev:./package.json",
       "name": "bs-react-intl-extractor",
-      "version": "link:./package.json",
-      "source": { "type": "link", "path": ".", "manifest": "package.json" },
+      "version": "link-dev:./package.json",
+      "source": {
+        "type": "link-dev",
+        "path": ".",
+        "manifest": "package.json"
+      },
       "overrides": [],
       "dependencies": [
-        "refmterr@3.1.10@d41d8cd9", "ocaml@4.6.9@d41d8cd9",
-        "@opam/yojson@opam:1.5.0@890db858",
+        "refmterr@3.1.10@d41d8cd9", "ocaml@4.6.10@d41d8cd9",
+        "@opam/yojson@opam:1.6.0@f7ec7c12",
         "@opam/ppx_fast_pipe@opam:0.0.1@2e77442d",
         "@opam/dune@opam:1.6.3@a7d7baed",
-        "@opam/alcotest@opam:0.8.4@ddaee259",
+        "@opam/alcotest@opam:0.8.5@0b35b339",
         "@esy-ocaml/reason@3.4.0@d41d8cd9"
       ],
       "devDependencies": [ "@esy-ocaml/merlin@3.0.5005@d41d8cd9" ]
     },
-    "@opam/yojson@opam:1.5.0@890db858": {
-      "id": "@opam/yojson@opam:1.5.0@890db858",
+    "@opam/yojson@opam:1.6.0@f7ec7c12": {
+      "id": "@opam/yojson@opam:1.6.0@f7ec7c12",
       "name": "@opam/yojson",
-      "version": "opam:1.5.0",
+      "version": "opam:1.6.0",
       "source": {
         "type": "install",
         "source": [
-          "archive:https://opam.ocaml.org/cache/md5/d8/d80de1bacdde292af42f7c78b323da7b#md5:d80de1bacdde292af42f7c78b323da7b",
-          "archive:https://github.com/ocaml-community/yojson/releases/download/1.5.0/yojson-1.5.0.tbz#md5:d80de1bacdde292af42f7c78b323da7b"
+          "archive:https://opam.ocaml.org/cache/md5/8c/8ca16557d3068253cc375452af3bde96#md5:8ca16557d3068253cc375452af3bde96",
+          "archive:https://github.com/ocaml-community/yojson/releases/download/1.6.0/yojson-1.6.0.tbz#md5:8ca16557d3068253cc375452af3bde96"
         ],
         "opam": {
           "name": "yojson",
-          "version": "1.5.0",
-          "path": "esy.lock/opam/yojson.1.5.0"
+          "version": "1.6.0",
+          "path": "esy.lock/opam/yojson.1.6.0"
         }
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/easy-format@opam:1.3.1@9abfd4ed",
+        "ocaml@4.6.10@d41d8cd9", "@opam/easy-format@opam:1.3.1@9abfd4ed",
         "@opam/dune@opam:1.6.3@a7d7baed", "@opam/cppo@opam:1.6.5@bec3dbd9",
         "@opam/biniou@opam:1.2.0@c8516f18",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/easy-format@opam:1.3.1@9abfd4ed",
+        "ocaml@4.6.10@d41d8cd9", "@opam/easy-format@opam:1.3.1@9abfd4ed",
         "@opam/biniou@opam:1.2.0@c8516f18"
       ]
     },
@@ -95,7 +99,7 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/topkg@opam:1.0.0@61f4ccf9",
+        "ocaml@4.6.10@d41d8cd9", "@opam/topkg@opam:1.0.0@61f4ccf9",
         "@opam/ocamlfind@opam:1.8.0@96572762",
         "@opam/ocamlbuild@opam:0.12.0@6c616094",
         "@opam/cmdliner@opam:1.0.3@96d31520",
@@ -103,7 +107,7 @@
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/base-bytes@opam:base@19d0c2ff"
+        "ocaml@4.6.10@d41d8cd9", "@opam/base-bytes@opam:base@19d0c2ff"
       ]
     },
     "@opam/uchar@opam:0.0.2@c8218eea": {
@@ -124,10 +128,10 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/ocamlbuild@opam:0.12.0@6c616094",
+        "ocaml@4.6.10@d41d8cd9", "@opam/ocamlbuild@opam:0.12.0@6c616094",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
-      "devDependencies": [ "ocaml@4.6.9@d41d8cd9" ]
+      "devDependencies": [ "ocaml@4.6.10@d41d8cd9" ]
     },
     "@opam/topkg@opam:1.0.0@61f4ccf9": {
       "id": "@opam/topkg@opam:1.0.0@61f4ccf9",
@@ -147,13 +151,13 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
+        "ocaml@4.6.10@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
         "@opam/ocamlfind@opam:1.8.0@96572762",
         "@opam/ocamlbuild@opam:0.12.0@6c616094",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
+        "ocaml@4.6.10@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
         "@opam/ocamlbuild@opam:0.12.0@6c616094"
       ]
     },
@@ -175,10 +179,10 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
+        "ocaml@4.6.10@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
-      "devDependencies": [ "ocaml@4.6.9@d41d8cd9" ]
+      "devDependencies": [ "ocaml@4.6.10@d41d8cd9" ]
     },
     "@opam/reason@opam:3.4.0@9dac40ad": {
       "id": "@opam/reason@opam:3.4.0@9dac40ad",
@@ -198,7 +202,7 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
+        "ocaml@4.6.10@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
         "@opam/ocamlfind@opam:1.8.0@96572762",
         "@opam/ocaml-migrate-parsetree@opam:1.2.0@5b3aa0d3",
         "@opam/merlin-extend@opam:0.3@e1fc0d08",
@@ -206,7 +210,7 @@
         "@opam/dune@opam:1.6.3@a7d7baed", "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
+        "ocaml@4.6.10@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
         "@opam/ocaml-migrate-parsetree@opam:1.2.0@5b3aa0d3",
         "@opam/merlin-extend@opam:0.3@e1fc0d08",
         "@opam/menhir@opam:20181113@0c8257a8"
@@ -230,10 +234,10 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
+        "ocaml@4.6.10@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
-      "devDependencies": [ "ocaml@4.6.9@d41d8cd9" ]
+      "devDependencies": [ "ocaml@4.6.10@d41d8cd9" ]
     },
     "@opam/ppx_fast_pipe@opam:0.0.1@2e77442d": {
       "id": "@opam/ppx_fast_pipe@opam:0.0.1@2e77442d",
@@ -253,12 +257,12 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/reason@opam:3.4.0@9dac40ad",
+        "ocaml@4.6.10@d41d8cd9", "@opam/reason@opam:3.4.0@9dac40ad",
         "@opam/ocaml-migrate-parsetree@opam:1.2.0@5b3aa0d3",
         "@opam/dune@opam:1.6.3@a7d7baed", "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/reason@opam:3.4.0@9dac40ad",
+        "ocaml@4.6.10@d41d8cd9", "@opam/reason@opam:3.4.0@9dac40ad",
         "@opam/ocaml-migrate-parsetree@opam:1.2.0@5b3aa0d3"
       ]
     },
@@ -280,10 +284,10 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
+        "ocaml@4.6.10@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
-      "devDependencies": [ "ocaml@4.6.9@d41d8cd9" ]
+      "devDependencies": [ "ocaml@4.6.10@d41d8cd9" ]
     },
     "@opam/ocamlfind@opam:1.8.0@96572762": {
       "id": "@opam/ocamlfind@opam:1.8.0@96572762",
@@ -309,10 +313,10 @@
         }
       ],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/conf-m4@opam:1@3279850f",
+        "ocaml@4.6.10@d41d8cd9", "@opam/conf-m4@opam:1@3279850f",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
-      "devDependencies": [ "ocaml@4.6.9@d41d8cd9" ]
+      "devDependencies": [ "ocaml@4.6.10@d41d8cd9" ]
     },
     "@opam/ocamlbuild@opam:0.12.0@6c616094": {
       "id": "@opam/ocamlbuild@opam:0.12.0@6c616094",
@@ -337,9 +341,9 @@
         }
       ],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@esy-ocaml/substs@0.0.1@d41d8cd9"
+        "ocaml@4.6.10@d41d8cd9", "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
-      "devDependencies": [ "ocaml@4.6.9@d41d8cd9" ]
+      "devDependencies": [ "ocaml@4.6.10@d41d8cd9" ]
     },
     "@opam/ocaml-migrate-parsetree@opam:1.2.0@5b3aa0d3": {
       "id": "@opam/ocaml-migrate-parsetree@opam:1.2.0@5b3aa0d3",
@@ -359,12 +363,12 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
+        "ocaml@4.6.10@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
         "@opam/ppx_derivers@opam:1.0@78655ff8",
         "@opam/dune@opam:1.6.3@a7d7baed", "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
+        "ocaml@4.6.10@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
         "@opam/ppx_derivers@opam:1.0@78655ff8"
       ]
     },
@@ -391,10 +395,10 @@
         }
       ],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/ocamlfind@opam:1.8.0@96572762",
+        "ocaml@4.6.10@d41d8cd9", "@opam/ocamlfind@opam:1.8.0@96572762",
         "@opam/cppo@opam:1.6.5@bec3dbd9", "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
-      "devDependencies": [ "ocaml@4.6.9@d41d8cd9" ]
+      "devDependencies": [ "ocaml@4.6.10@d41d8cd9" ]
     },
     "@opam/menhir@opam:20181113@0c8257a8": {
       "id": "@opam/menhir@opam:20181113@0c8257a8",
@@ -414,11 +418,11 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/ocamlfind@opam:1.8.0@96572762",
+        "ocaml@4.6.10@d41d8cd9", "@opam/ocamlfind@opam:1.8.0@96572762",
         "@opam/ocamlbuild@opam:0.12.0@6c616094",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
-      "devDependencies": [ "ocaml@4.6.9@d41d8cd9" ]
+      "devDependencies": [ "ocaml@4.6.10@d41d8cd9" ]
     },
     "@opam/jbuilder@opam:transition@58bdfe0a": {
       "id": "@opam/jbuilder@opam:transition@58bdfe0a",
@@ -435,11 +439,11 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/dune@opam:1.6.3@a7d7baed",
+        "ocaml@4.6.10@d41d8cd9", "@opam/dune@opam:1.6.3@a7d7baed",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/dune@opam:1.6.3@a7d7baed"
+        "ocaml@4.6.10@d41d8cd9", "@opam/dune@opam:1.6.3@a7d7baed"
       ]
     },
     "@opam/fmt@opam:0.8.5@01e38a4e": {
@@ -460,7 +464,7 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/uchar@opam:0.0.2@c8218eea",
+        "ocaml@4.6.10@d41d8cd9", "@opam/uchar@opam:0.0.2@c8218eea",
         "@opam/topkg@opam:1.0.0@61f4ccf9", "@opam/result@opam:1.3@bee8bf2e",
         "@opam/ocamlfind@opam:1.8.0@96572762",
         "@opam/ocamlbuild@opam:0.12.0@6c616094",
@@ -469,7 +473,7 @@
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/uchar@opam:0.0.2@c8218eea",
+        "ocaml@4.6.10@d41d8cd9", "@opam/uchar@opam:0.0.2@c8218eea",
         "@opam/result@opam:1.3@bee8bf2e"
       ]
     },
@@ -491,10 +495,10 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
+        "ocaml@4.6.10@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
-      "devDependencies": [ "ocaml@4.6.9@d41d8cd9" ]
+      "devDependencies": [ "ocaml@4.6.10@d41d8cd9" ]
     },
     "@opam/dune@opam:1.6.3@a7d7baed": {
       "id": "@opam/dune@opam:1.6.3@a7d7baed",
@@ -519,12 +523,12 @@
         }
       ],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/base-unix@opam:base@87d0b2eb",
+        "ocaml@4.6.10@d41d8cd9", "@opam/base-unix@opam:base@87d0b2eb",
         "@opam/base-threads@opam:base@36803084",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/base-unix@opam:base@87d0b2eb",
+        "ocaml@4.6.10@d41d8cd9", "@opam/base-unix@opam:base@87d0b2eb",
         "@opam/base-threads@opam:base@36803084"
       ]
     },
@@ -546,12 +550,12 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
+        "ocaml@4.6.10@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
         "@opam/base-unix@opam:base@87d0b2eb",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/base-unix@opam:base@87d0b2eb"
+        "ocaml@4.6.10@d41d8cd9", "@opam/base-unix@opam:base@87d0b2eb"
       ]
     },
     "@opam/conf-which@opam:1@1da7b8cf": {
@@ -606,9 +610,9 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@esy-ocaml/substs@0.0.1@d41d8cd9"
+        "ocaml@4.6.10@d41d8cd9", "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
-      "devDependencies": [ "ocaml@4.6.9@d41d8cd9" ]
+      "devDependencies": [ "ocaml@4.6.10@d41d8cd9" ]
     },
     "@opam/biniou@opam:1.2.0@c8516f18": {
       "id": "@opam/biniou@opam:1.2.0@c8516f18",
@@ -628,13 +632,13 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
+        "ocaml@4.6.10@d41d8cd9", "@opam/jbuilder@opam:transition@58bdfe0a",
         "@opam/easy-format@opam:1.3.1@9abfd4ed",
         "@opam/conf-which@opam:1@1da7b8cf",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/easy-format@opam:1.3.1@9abfd4ed"
+        "ocaml@4.6.10@d41d8cd9", "@opam/easy-format@opam:1.3.1@9abfd4ed"
       ]
     },
     "@opam/base-unix@opam:base@87d0b2eb": {
@@ -686,11 +690,11 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/ocamlfind@opam:1.8.0@96572762",
+        "ocaml@4.6.10@d41d8cd9", "@opam/ocamlfind@opam:1.8.0@96572762",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/ocamlfind@opam:1.8.0@96572762"
+        "ocaml@4.6.10@d41d8cd9", "@opam/ocamlfind@opam:1.8.0@96572762"
       ]
     },
     "@opam/astring@opam:0.8.3@4e5e17d5": {
@@ -711,44 +715,43 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/topkg@opam:1.0.0@61f4ccf9",
+        "ocaml@4.6.10@d41d8cd9", "@opam/topkg@opam:1.0.0@61f4ccf9",
         "@opam/ocamlfind@opam:1.8.0@96572762",
         "@opam/ocamlbuild@opam:0.12.0@6c616094",
         "@opam/base-bytes@opam:base@19d0c2ff",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/base-bytes@opam:base@19d0c2ff"
+        "ocaml@4.6.10@d41d8cd9", "@opam/base-bytes@opam:base@19d0c2ff"
       ]
     },
-    "@opam/alcotest@opam:0.8.4@ddaee259": {
-      "id": "@opam/alcotest@opam:0.8.4@ddaee259",
+    "@opam/alcotest@opam:0.8.5@0b35b339": {
+      "id": "@opam/alcotest@opam:0.8.5@0b35b339",
       "name": "@opam/alcotest",
-      "version": "opam:0.8.4",
+      "version": "opam:0.8.5",
       "source": {
         "type": "install",
         "source": [
-          "archive:https://opam.ocaml.org/cache/md5/c9/c940f89a2bb2e23d3f1422ce61d1396b#md5:c940f89a2bb2e23d3f1422ce61d1396b",
-          "archive:https://github.com/mirage/alcotest/releases/download/0.8.4/alcotest-0.8.4.tbz#md5:c940f89a2bb2e23d3f1422ce61d1396b"
+          "archive:https://opam.ocaml.org/cache/md5/2d/2db36741c413ab93391ecc1f983aa804#md5:2db36741c413ab93391ecc1f983aa804",
+          "archive:https://github.com/mirage/alcotest/releases/download/0.8.5/alcotest-0.8.5.tbz#md5:2db36741c413ab93391ecc1f983aa804"
         ],
         "opam": {
           "name": "alcotest",
-          "version": "0.8.4",
-          "path": "esy.lock/opam/alcotest.0.8.4"
+          "version": "0.8.5",
+          "path": "esy.lock/opam/alcotest.0.8.5"
         }
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/uuidm@opam:0.9.6@bcd0dcef",
-        "@opam/result@opam:1.3@bee8bf2e",
-        "@opam/jbuilder@opam:transition@58bdfe0a",
-        "@opam/fmt@opam:0.8.5@01e38a4e",
+        "ocaml@4.6.10@d41d8cd9", "@opam/uuidm@opam:0.9.6@bcd0dcef",
+        "@opam/result@opam:1.3@bee8bf2e", "@opam/fmt@opam:0.8.5@01e38a4e",
+        "@opam/dune@opam:1.6.3@a7d7baed",
         "@opam/cmdliner@opam:1.0.3@96d31520",
         "@opam/astring@opam:0.8.3@4e5e17d5",
         "@esy-ocaml/substs@0.0.1@d41d8cd9"
       ],
       "devDependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/uuidm@opam:0.9.6@bcd0dcef",
+        "ocaml@4.6.10@d41d8cd9", "@opam/uuidm@opam:0.9.6@bcd0dcef",
         "@opam/result@opam:1.3@bee8bf2e", "@opam/fmt@opam:0.8.5@01e38a4e",
         "@opam/cmdliner@opam:1.0.3@96d31520",
         "@opam/astring@opam:0.8.3@4e5e17d5"
@@ -780,7 +783,7 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
+        "ocaml@4.6.10@d41d8cd9", "@opam/result@opam:1.3@bee8bf2e",
         "@opam/ocamlfind@opam:1.8.0@96572762",
         "@opam/ocaml-migrate-parsetree@opam:1.2.0@5b3aa0d3",
         "@opam/merlin-extend@opam:0.3@e1fc0d08",
@@ -801,7 +804,7 @@
       },
       "overrides": [],
       "dependencies": [
-        "ocaml@4.6.9@d41d8cd9", "@opam/yojson@opam:1.5.0@890db858",
+        "ocaml@4.6.10@d41d8cd9", "@opam/yojson@opam:1.6.0@f7ec7c12",
         "@opam/ocamlfind@opam:1.8.0@96572762",
         "@esy-ocaml/substs@0.0.1@d41d8cd9",
         "@esy-ocaml/esy-installer@0.0.0@d41d8cd9"
diff --git a/esy.lock/opam/alcotest.0.8.4/opam b/esy.lock/opam/alcotest.0.8.5/opam
similarity index 54%
rename from esy.lock/opam/alcotest.0.8.4/opam
rename to esy.lock/opam/alcotest.0.8.5/opam
index 81e64fc..42533b3 100644
--- a/esy.lock/opam/alcotest.0.8.4/opam
+++ b/esy.lock/opam/alcotest.0.8.5/opam
@@ -1,5 +1,30 @@
 opam-version: "2.0"
-synopsis: "Alcotest is a lightweight and colourful test framework."
+maintainer:  "thomas@gazagnaire.org"
+authors:     "Thomas Gazagnaire"
+homepage:    "https://github.com/mirage/alcotest/"
+dev-repo:    "git+https://github.com/mirage/alcotest.git"
+bug-reports: "https://github.com/mirage/alcotest/issues/"
+license:     "ISC"
+doc:         "https://mirage.github.io/alcotest/"
+
+build: [
+  ["dune" "subst"] {pinned}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
+]
+
+depends: [
+  "dune"  {build & >= "1.1.0"}
+  "ocaml" {>= "4.02.3"}
+  "fmt"   {>= "0.8.0"}
+  "astring"
+  "result"
+  "cmdliner"
+  "uuidm"
+]
+
+synopsis: "Alcotest is a lightweight and colourful test framework"
+
 description: """
 Alcotest exposes simple interface to perform unit tests. It exposes
 a simple TESTABLE module type, a check function to assert test
@@ -9,30 +34,10 @@ test callbacks.
 Alcotest provides a quiet and colorful output where only faulty runs
 are fully displayed at the end of the run (with the full logs ready to
 inspect), with a simple (yet expressive) query language to select the
-tests to run."""
-maintainer: "thomas@gazagnaire.org"
-authors: "Thomas Gazagnaire"
-license: "ISC"
-homepage: "https://github.com/mirage/alcotest/"
-doc: "https://mirage.github.io/alcotest/"
-bug-reports: "https://github.com/mirage/alcotest/issues/"
-depends: [
-  "ocaml" {>= "4.02.3"}
-  "jbuilder" {build & >= "1.0+beta10"}
-  "fmt" {>= "0.8.0"}
-  "astring"
-  "result"
-  "cmdliner"
-  "uuidm"
-]
-build: [
-  ["jbuilder" "subst" "-p" name] {pinned}
-  ["jbuilder" "build" "-p" name "-j" jobs]
-  ["jbuilder" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/mirage/alcotest.git"
+tests to run.
+"""
 url {
   src:
-    "https://github.com/mirage/alcotest/releases/download/0.8.4/alcotest-0.8.4.tbz"
-  checksum: "md5=c940f89a2bb2e23d3f1422ce61d1396b"
+    "https://github.com/mirage/alcotest/releases/download/0.8.5/alcotest-0.8.5.tbz"
+  checksum: "md5=2db36741c413ab93391ecc1f983aa804"
 }
diff --git a/esy.lock/opam/yojson.1.5.0/opam b/esy.lock/opam/yojson.1.6.0/opam
similarity index 86%
rename from esy.lock/opam/yojson.1.5.0/opam
rename to esy.lock/opam/yojson.1.6.0/opam
index fe695a1..08c9ab1 100644
--- a/esy.lock/opam/yojson.1.5.0/opam
+++ b/esy.lock/opam/yojson.1.6.0/opam
@@ -9,12 +9,14 @@ build: [
   ["dune" "subst"] {pinned}
   ["dune" "build" "-p" name "-j" jobs]
 ]
+run-test: [["dune" "runtest" "-p" name "-j" jobs]]
 depends: [
   "ocaml" {>= "4.02.3"}
   "dune" {build}
   "cppo" {build}
   "easy-format"
   "biniou" {>= "1.2.0"}
+  "alcotest" {with-test & >= "0.8.5"}
 ]
 synopsis:
   "Yojson is an optimized parsing and printing library for the JSON format"
@@ -31,6 +33,6 @@ The program atdgen can be used to derive OCaml-JSON serializers and
 deserializers from type definitions."""
 url {
   src:
-    "https://github.com/ocaml-community/yojson/releases/download/1.5.0/yojson-1.5.0.tbz"
-  checksum: "md5=d80de1bacdde292af42f7c78b323da7b"
+    "https://github.com/ocaml-community/yojson/releases/download/1.6.0/yojson-1.6.0.tbz"
+  checksum: "md5=8ca16557d3068253cc375452af3bde96"
 }