diff --git a/package-lock.json b/package-lock.json
index 32a1a26..1cd6086 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1079,9 +1079,9 @@
       }
     },
     "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==",
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/mfgames-opf/-/mfgames-opf-0.2.1.tgz",
+      "integrity": "sha512-/UNwNWcWHF9vxhSK6KWex3doXXNFE9k9j03GwNrdwqUdFljujeydxZ3zy4P/B0IEGYyUukL/09ySnuYCZATLbg==",
       "requires": {
         "moment": "2.22.1",
         "xmlbuilder": "8.2.2"
@@ -1103,15 +1103,15 @@
       }
     },
     "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",
diff --git a/package.json b/package.json
index 47c9de0..ada35ff 100644
--- a/package.json
+++ b/package.json
@@ -17,9 +17,8 @@
   "dependencies": {
     "fedran-hyphen": "^0.2.0",
     "fedran-theme": "^1.1.0",
-    "mfgames-opf": "^0.2.0",
     "mfgames-writing-contracts": "^3.1.0",
-    "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"