diff --git a/pkgs/python-packages.nix b/pkgs/python-packages.nix
--- a/pkgs/python-packages.nix
+++ b/pkgs/python-packages.nix
@@ -197,19 +197,6 @@
       license = [ pkgs.lib.licenses.mit ];
     };
   };
-  SQLAlchemy = super.buildPythonPackage {
-    name = "SQLAlchemy-1.1.15";
-    buildInputs = with self; [];
-    doCheck = false;
-    propagatedBuildInputs = with self; [];
-    src = fetchurl {
-      url = "https://files.pythonhosted.org/packages/c2/f6/11fcc1ce19a7cb81b1c9377f4e27ce3813265611922e355905e57c44d164/SQLAlchemy-1.1.15.tar.gz";
-      sha256 = "8b79a5ed91cdcb5abe97b0045664c55c140aec09e5dd5c01303e23de5fe7a95a";
-    };
-    meta = {
-      license = [ pkgs.lib.licenses.mit ];
-    };
-  };
   Tempita = super.buildPythonPackage {
     name = "Tempita-0.5.2";
     buildInputs = with self; [];
@@ -1793,6 +1780,19 @@
       license = [ pkgs.lib.licenses.mit ];
     };
   };
+  sqlalchemy = super.buildPythonPackage {
+    name = "sqlalchemy-1.1.18";
+    buildInputs = with self; [];
+    doCheck = false;
+    propagatedBuildInputs = with self; [];
+    src = fetchurl {
+      url = "https://files.pythonhosted.org/packages/cc/4d/96d93ff77cd67aca7618e402191eee3490d8f5f245d6ab7622d35fe504f4/SQLAlchemy-1.1.18.tar.gz";
+      sha256 = "8b0ec71af9291191ba83a91c03d157b19ab3e7119e27da97932a4773a3f664a9";
+    };
+    meta = {
+      license = [ pkgs.lib.licenses.mit ];
+    };
+  };
   sshpubkeys = super.buildPythonPackage {
     name = "sshpubkeys-2.2.0";
     buildInputs = with self; [];
diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -73,7 +73,7 @@ Routes==2.4.1
 setproctitle==1.1.10
 simplejson==3.11.1
 six==1.11.0
-SQLAlchemy==1.1.15
+sqlalchemy==1.1.18
 sshpubkeys==2.2.0
 subprocess32==3.2.7
 supervisor==3.3.4