diff --git a/flake.nix b/flake.nix
index 5f77e42d1..fc4836864 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = "The purely functional package manager";
 
   inputs.nixpkgs.url = "nixpkgs/nixos-21.05-small";
-  inputs.lowdown-src = { url = "github:kristapsdz/lowdown/VERSION_0_8_6"; flake = false; };
+  inputs.lowdown-src = { url = "github:kristapsdz/lowdown"; flake = false; };
 
   outputs = { self, nixpkgs, lowdown-src }:
 
@@ -350,7 +350,7 @@
         };
 
         lowdown = with final; stdenv.mkDerivation rec {
-          name = "lowdown-0.8.6";
+          name = "lowdown-0.9.0";
 
           /*
           src = fetchurl {
diff --git a/src/libcmd/markdown.cc b/src/libcmd/markdown.cc
index 737356284..29bb4d31e 100644
--- a/src/libcmd/markdown.cc
+++ b/src/libcmd/markdown.cc
@@ -25,7 +25,7 @@ std::string renderMarkdownToTerminal(std::string_view markdown)
     Finally freeDoc([&]() { lowdown_doc_free(doc); });
 
     size_t maxn = 0;
-    auto node = lowdown_doc_parse(doc, &maxn, markdown.data(), markdown.size());
+    auto node = lowdown_doc_parse(doc, &maxn, markdown.data(), markdown.size(), nullptr);
     if (!node)
         throw Error("cannot parse Markdown document");
     Finally freeNode([&]() { lowdown_node_free(node); });
@@ -40,7 +40,7 @@ std::string renderMarkdownToTerminal(std::string_view markdown)
         throw Error("cannot allocate Markdown output buffer");
     Finally freeBuffer([&]() { lowdown_buf_free(buf); });
 
-    int rndr_res = lowdown_term_rndr(buf, nullptr, renderer, node);
+    int rndr_res = lowdown_term_rndr(buf, renderer, node);
     if (!rndr_res)
         throw Error("allocation error while rendering Markdown");