diff --git a/packages/actor-rdf-metadata-extract-shapetrees/package.json b/packages/actor-rdf-metadata-extract-shapetrees/package.json
index d2d9b632b..ed5750320 100644
--- a/packages/actor-rdf-metadata-extract-shapetrees/package.json
+++ b/packages/actor-rdf-metadata-extract-shapetrees/package.json
@@ -38,7 +38,7 @@
     "@comunica/bus-rdf-metadata-extract": "^2.10.0",
     "@comunica/context-entries": "^2.10.0",
     "@comunica/core": "^2.10.0",
-    "@shexjs/parser": "1.0.0-alpha.27",
+    "@shexjs/parser": "1.0.0-alpha.28",
     "@shexjs/visitor": "1.0.0-alpha.25",
     "@types/parse-link-header": "^2.0.1",
     "@types/shexj": "^2.1.4",
diff --git a/yarn.lock b/yarn.lock
index e2a6d7391..bb506fff6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5808,12 +5808,12 @@
   resolved "https://registry.yarnpkg.com/@rushstack/eslint-patch/-/eslint-patch-1.4.0.tgz#77e948b9760bd22736a5d26e335a690f76fda37b"
   integrity sha512-cEjvTPU32OM9lUFegJagO0mRnIn+rbqrG89vV8/xLnLFX0DoR0r1oy5IlTga71Q7uT3Qus7qm7wgeiMT/+Irlg==
 
-"@shexjs/parser@1.0.0-alpha.27":
-  version "1.0.0-alpha.27"
-  resolved "https://registry.yarnpkg.com/@shexjs/parser/-/parser-1.0.0-alpha.27.tgz#73799bd20b8aba04b017656c4090de7185783fdd"
-  integrity sha512-ahnc38+fQkaA3Vjbok88UvVCeowlvU5vFPYuCZ07OJVTm3Qhw5U4WmG4s3F2HhTRH90m/IYezaLc+X6y74DKOg==
+"@shexjs/parser@1.0.0-alpha.28":
+  version "1.0.0-alpha.28"
+  resolved "https://registry.yarnpkg.com/@shexjs/parser/-/parser-1.0.0-alpha.28.tgz#ad72acb1789a7ad42820f4ff6278e46e359a3c20"
+  integrity sha512-eeVeHq/2JG9X+3h7y+7EmuBSWWl2EMj/EQBLk5CTRx4W4hWDdjWczsY8RWwKjkIzLwUS1+G0aiAI1u5LHCZ2Rw==
   dependencies:
-    "@shexjs/util" "^1.0.0-alpha.27"
+    "@shexjs/util" "^1.0.0-alpha.28"
     "@ts-jison/parser" "^0.4.1-alpha.1"
 
 "@shexjs/term@^1.0.0-alpha.27":
@@ -5825,15 +5825,15 @@
     rdf-data-factory "^1.1.2"
     relativize-url "^0.1.0"
 
-"@shexjs/util@^1.0.0-alpha.27":
-  version "1.0.0-alpha.27"
-  resolved "https://registry.yarnpkg.com/@shexjs/util/-/util-1.0.0-alpha.27.tgz#642d7501174c3958652cf0086a08a0985deeff75"
-  integrity sha512-Z1B18RXSL1cBcEcLeBE2gb4+RKHHY8nWIGGepU85WgRSSyVKmZQFTybmBj64sA09MbTGLjfN5w4FYonq0x/OwA==
+"@shexjs/util@^1.0.0-alpha.28":
+  version "1.0.0-alpha.28"
+  resolved "https://registry.yarnpkg.com/@shexjs/util/-/util-1.0.0-alpha.28.tgz#3a654d589ff9ffcec2ea772dcd94323471821161"
+  integrity sha512-L8pBokTU/5eNRJPkC8R9SIgPw6/JDh/bHKdV5TZzf8/FkOMNJwKIy6UDHXM1I8FJ+c8u2gOOHp2MA+7b+md+0A==
   dependencies:
     "@shexjs/term" "^1.0.0-alpha.27"
     "@shexjs/visitor" "^1.0.0-alpha.27"
     "@types/shexj" "^2.1.6"
-    hierarchy-closure "^1.2.1"
+    hierarchy-closure "^1.2.2"
     sync-request "^6.1.0"
 
 "@shexjs/visitor@1.0.0-alpha.25":
@@ -9483,10 +9483,10 @@ hash.js@^1.0.0, hash.js@^1.0.3, hash.js@^1.1.7:
     inherits "^2.0.3"
     minimalistic-assert "^1.0.1"
 
-hierarchy-closure@^1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/hierarchy-closure/-/hierarchy-closure-1.2.1.tgz#8291c439f4a9d3021e4b752bacf191d83cca193d"
-  integrity sha512-3Lm4gqKditachEhU94qyd5YtyfVOcKAs3WZVAd62DxQGLaA1ZU4mGPg7bOvgm9JTzWbcXoipTikYRvrflY7Orw==
+hierarchy-closure@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/hierarchy-closure/-/hierarchy-closure-1.2.2.tgz#3867706b1bb40a66c3959c0f2a1386a8147949cc"
+  integrity sha512-ZqZvsA6HyMqrmm49D3llYA8x8hqdyDDEkaTXcqwyO+fGQlzxoeXws/5ze11M40s4EoTw7GFxdTKIwj5YDOicLQ==
 
 hmac-drbg@^1.0.1:
   version "1.0.1"