diff --git a/package-lock.json b/package-lock.json
index 7b1f972..326de9a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1063,19 +1063,18 @@
       }
     },
     "mfgames-opf": {
-      "version": "0.0.2",
-      "resolved": "https://registry.npmjs.org/mfgames-opf/-/mfgames-opf-0.0.2.tgz",
-      "integrity": "sha512-oYQotDbwYNmaUULWGUVk0L+sOLV60PK9cZuQNrSqY4IhtHDy/9gq/DcTP0+HqUJ+Hc/KdCt/MNtiosKHIosvAg==",
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/mfgames-opf/-/mfgames-opf-0.2.1.tgz",
+      "integrity": "sha512-/UNwNWcWHF9vxhSK6KWex3doXXNFE9k9j03GwNrdwqUdFljujeydxZ3zy4P/B0IEGYyUukL/09ySnuYCZATLbg==",
       "requires": {
-        "@types/node": "4.2.23",
-        "@types/xmlbuilder": "0.0.26-alpha",
+        "moment": "2.22.1",
         "xmlbuilder": "8.2.2"
       },
       "dependencies": {
-        "@types/node": {
-          "version": "4.2.23",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-4.2.23.tgz",
-          "integrity": "sha512-U6IchCNLRyswc9p6G6lxWlbE+KwAhZp6mGo6MD2yWpmFomhYmetK+c98OpKyvphNn04CU3aXeJrXdOqbXVTS/w=="
+        "moment": {
+          "version": "2.22.1",
+          "resolved": "https://registry.npmjs.org/moment/-/moment-2.22.1.tgz",
+          "integrity": "sha512-shJkRTSebXvsVqk56I+lkb2latjBs8I+pc2TzWc545y2iFnSjm7Wg0QMh+ZWcdSLQyGEau5jI8ocnmkyTgr9YQ=="
         }
       }
     },
@@ -1097,15 +1096,15 @@
       }
     },
     "mfgames-writing-epub": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/mfgames-writing-epub/-/mfgames-writing-epub-1.1.0.tgz",
-      "integrity": "sha512-GSkHPDEZN8FWzQ8lG2aYxn1lGvA30Mna64u/aarjALJPd+Qty5pBq3OejidaIdrDya4HocfHbyK6HIgU4EhwYg==",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/mfgames-writing-epub/-/mfgames-writing-epub-1.1.1.tgz",
+      "integrity": "sha512-18fHR1I5zPaXDpncJ1+AkwrS0txrhPPsAKAPtSAeZIX0otP37L0bvktzYF9LwNH93ARB23f20sJvnvUlRWI4jw==",
       "requires": {
         "gray-matter": "4.0.1",
         "jszip": "3.1.5",
         "marked": "0.3.19",
         "mfgames-ncx": "0.0.2",
-        "mfgames-opf": "0.2.0",
+        "mfgames-opf": "0.2.1",
         "mfgames-writing-contracts": "3.1.0",
         "mime": "1.6.0",
         "moment": "2.22.1",
@@ -1117,15 +1116,6 @@
           "resolved": "https://registry.npmjs.org/marked/-/marked-0.3.19.tgz",
           "integrity": "sha512-ea2eGWOqNxPcXv8dyERdSr/6FmzvWwzjMxpfGB/sbMccXoct+xY+YukPD+QTUZwyvK7BZwcr4m21WBOW41pAkg=="
         },
-        "mfgames-opf": {
-          "version": "0.2.0",
-          "resolved": "https://registry.npmjs.org/mfgames-opf/-/mfgames-opf-0.2.0.tgz",
-          "integrity": "sha512-44EgX/sozyTw2ib2yGO5BDdaixfNf3Mt0ditPiyswq3TF2f4CdlfE/sJ0AAdgQn/b0uH1bvF8WHFd+MVBoHr4A==",
-          "requires": {
-            "moment": "2.22.1",
-            "xmlbuilder": "8.2.2"
-          }
-        },
         "mfgames-writing-contracts": {
           "version": "3.1.0",
           "resolved": "https://registry.npmjs.org/mfgames-writing-contracts/-/mfgames-writing-contracts-3.1.0.tgz",
@@ -1166,11 +1156,26 @@
         "zpad": "0.5.0"
       },
       "dependencies": {
+        "@types/node": {
+          "version": "4.2.23",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-4.2.23.tgz",
+          "integrity": "sha512-U6IchCNLRyswc9p6G6lxWlbE+KwAhZp6mGo6MD2yWpmFomhYmetK+c98OpKyvphNn04CU3aXeJrXdOqbXVTS/w=="
+        },
         "camelcase": {
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
           "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo="
         },
+        "mfgames-opf": {
+          "version": "0.0.2",
+          "resolved": "https://registry.npmjs.org/mfgames-opf/-/mfgames-opf-0.0.2.tgz",
+          "integrity": "sha512-oYQotDbwYNmaUULWGUVk0L+sOLV60PK9cZuQNrSqY4IhtHDy/9gq/DcTP0+HqUJ+Hc/KdCt/MNtiosKHIosvAg==",
+          "requires": {
+            "@types/node": "4.2.23",
+            "@types/xmlbuilder": "0.0.26-alpha",
+            "xmlbuilder": "8.2.2"
+          }
+        },
         "mfgames-writing-contracts": {
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/mfgames-writing-contracts/-/mfgames-writing-contracts-3.0.0.tgz",
diff --git a/package.json b/package.json
index 937bce1..772d0d7 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   "dependencies": {
     "fedran-hyphen": "^0.2.0",
     "fedran-theme": "^1.1.0",
-    "mfgames-writing-epub": "^1.1.0",
+    "mfgames-writing-epub": "^1.1.1",
     "mfgames-writing-format": "^1.0.1",
     "mfgames-writing-hyphen": "^0.4.2",
     "mfgames-writing-weasyprint": "^3.0.1",