diff --git a/pkgs/development/python-modules/advocate/default.nix b/pkgs/development/python-modules/advocate/default.nix
new file mode 100644
index 000000000000..7462dfb86837
--- /dev/null
+++ b/pkgs/development/python-modules/advocate/default.nix
@@ -0,0 +1,45 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, ndg-httpsclient
+, netifaces
+, pyasn1
+, pyopenssl
+, requests
+, six
+, urllib3
+}:
+
+buildPythonPackage rec {
+  pname = "advocate";
+  version = "1.0.0";
+
+  src = fetchFromGitHub {
+    owner = "JordanMilne";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-opObkjkad+yrLE2b7DULHjGuNeVhu4fEmSavgA39YPw=";
+  };
+
+  propagatedBuildInputs = [
+    ndg-httpsclient
+    netifaces
+    pyasn1
+    pyopenssl
+    requests
+    six
+    urllib3
+  ];
+
+  # The tests do network requests, so disabled
+  doCheck = false;
+
+  pythonImportsCheck = [ "advocate" ];
+
+  meta = with lib; {
+    homepage = "https://github.com/JordanMilne/Advocate";
+    description = "An SSRF-preventing wrapper around Python's requests library";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ pborzenkov ];
+  };
+}
diff --git a/pkgs/servers/calibre-web/default.nix b/pkgs/servers/calibre-web/default.nix
index 308654039983..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 = [
@@ -53,11 +55,14 @@ python3.pkgs.buildPythonApplication rec {
 
     substituteInPlace setup.cfg \
       --replace "cps = calibreweb:main" "calibre-web = calibreweb:main" \
-      --replace "flask-wtf>=0.14.2,<0.16.0" "flask-wtf>=0.14.2" \
-      --replace "lxml>=3.8.0,<4.7.0" "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>=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,<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.
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 4bcef40549f7..691cacc2f275 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -218,6 +218,8 @@ in {
 
   advantage-air = callPackage ../development/python-modules/advantage-air { };
 
+  advocate = callPackage ../development/python-modules/advocate { };
+
   aemet-opendata = callPackage ../development/python-modules/aemet-opendata { };
 
   aenum = callPackage ../development/python-modules/aenum { };