diff --git a/pkgs/development/python-modules/llvmlite/default.nix b/pkgs/development/python-modules/llvmlite/default.nix
index 3a7f381e51c5..c96975412b96 100644
--- a/pkgs/development/python-modules/llvmlite/default.nix
+++ b/pkgs/development/python-modules/llvmlite/default.nix
@@ -11,13 +11,13 @@
 
 buildPythonPackage rec {
   pname = "llvmlite";
-  version = "0.32.1";
+  version = "0.33.0";
 
   disabled = isPyPy || !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "41262a47b8cbba5a09203b15b65fbdf11192f92aa226c81e99115acdee8f3b8d";
+    sha256 = "9c8aae96f7fba10d9ac864b443d1e8c7ee4765c31569a2b201b3d0b67d8fc596";
   };
 
   nativeBuildInputs = [ llvm ];
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 9a3196b1f2f6..09afb5c020a5 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4455,7 +4455,9 @@ in {
 
   locustio = callPackage ../development/python-modules/locustio { };
 
-  llvmlite = callPackage ../development/python-modules/llvmlite { llvm = pkgs.llvm_8; };
+  llvmlite = callPackage ../development/python-modules/llvmlite { 
+    llvm = pkgs.llvm_9; # llvmlite always requires a specific version of llvm.
+  };
 
   lockfile = callPackage ../development/python-modules/lockfile { };