diff --git a/pkgs/servers/calibre-web/default.nix b/pkgs/servers/calibre-web/default.nix
index e170d761115b..675230478f91 100644
--- a/pkgs/servers/calibre-web/default.nix
+++ b/pkgs/servers/calibre-web/default.nix
@@ -7,16 +7,17 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "calibre-web";
-  version = "0.6.17";
+  version = "0.6.18";
 
   src = fetchFromGitHub {
     owner = "janeczku";
     repo = "calibre-web";
     rev = version;
-    sha256 = "sha256-K2va9as+z00txpg/0fR89+kpMzpQSiSSIV489NDs8Bs=";
+    sha256 = "sha256-KjmpFetNhNM5tL34e/Pn1i3hc86JZglubSMsHZWu198=";
   };
 
   propagatedBuildInputs = with python3Packages; [
+    advocate
     backports_abc
     flask-babel
     flask_login
@@ -30,6 +31,7 @@ python3.pkgs.buildPythonApplication rec {
     tornado
     unidecode
     Wand
+    werkzeug
   ];
 
   patches = [
@@ -55,11 +57,12 @@ python3.pkgs.buildPythonApplication rec {
       --replace "cps = calibreweb:main" "calibre-web = calibreweb:main" \
       --replace "Flask>=1.0.2,<2.1.0" "Flask>=1.0.2" \
       --replace "Flask-Login>=0.3.2,<0.5.1" "Flask-Login>=0.3.2" \
-      --replace "flask-wtf>=0.14.2,<0.16.0" "flask-wtf>=0.14.2" \
-      --replace "lxml>=3.8.0,<4.8.0" "lxml>=3.8.0" \
-      --replace "PyPDF3>=1.0.0,<1.0.4" "PyPDF3>=1.0.0" \
-      --replace "requests>=2.11.1,<2.25.0" "requests" \
-      --replace "unidecode>=0.04.19,<1.3.0" "unidecode>=0.04.19"
+      --replace "flask-wtf>=0.14.2,<1.1.0" "flask-wtf>=0.14.2" \
+      --replace "lxml>=3.8.0,<4.9.0" "lxml>=3.8.0" \
+      --replace "PyPDF3>=1.0.0,<1.0.7" "PyPDF3>=1.0.0" \
+      --replace "requests>=2.11.1,<2.28.0" "requests" \
+      --replace "unidecode>=0.04.19,<1.4.0" "unidecode>=0.04.19" \
+      --replace "werkzeug<2.1.0" ""
   '';
 
   # Upstream repo doesn't provide any tests.