diff --git a/dynamic.nix b/dynamic.nix
index 1282e10..06a8d26 100644
--- a/dynamic.nix
+++ b/dynamic.nix
@@ -124,6 +124,7 @@ pkgs.mkShell {
           jq
           libblst
           libsodium-vrf
+          lmdb          # for cardano-lmdb/ouroboros-consensus
           secp256k1
           yq-go
         ]
diff --git a/flake.nix b/flake.nix
index 5a62054..67a9587 100644
--- a/flake.nix
+++ b/flake.nix
@@ -36,6 +36,12 @@
             '';
             postFixup = "";
           });
+          static-lmdb = final.lmdb.overrideDerivation (old: {
+            # Don't attempt the .so if static, as it would fail.
+            postPatch = ''
+              sed 's/^ILIBS\>.*/ILIBS = liblmdb.a/' -i Makefile
+            '';
+          });
          });
 
          cddl-tools = (final: prev: {
diff --git a/static.nix b/static.nix
index 5f91545..1ed6bb2 100644
--- a/static.nix
+++ b/static.nix
@@ -128,6 +128,7 @@ pkgs.mkShell (rec {
         static-libblst
         static-libsodium-vrf
         static-secp256k1
+        static-lmdb   # for cardano-lmdb/ouroboros-consensus
         icu           # for cardano-cli
         gh
         jq
diff --git a/tool-map.nix b/tool-map.nix
index bc5fe54..6904dbe 100644
--- a/tool-map.nix
+++ b/tool-map.nix
@@ -15,7 +15,7 @@ let
              f76d08be13e9a61a377a85e2fb63f4c5435d40f8feb3e12eb05905edb8cdea89
              26021a13b401500c8eb2761ca95c61f2d625bfef951b939a8124ed12ecf07329
              7541f32a4ccca4f97aea3b22f5e593ba2c0267546016b992dfadcd2fe944e55d
-          --sha256: sha256-+hzciiQqWb5oOzQ2JZ2lzJGfGuwA3ZigeWgAQ8Dz+kk=
+          --sha256: sha256-YVcHIBJ8qo2fCBkuRM+vCVVoEEzGcFqNPMukSCBbcJw=
 
         if impl(ghc < 9.13)
           active-repositories: hackage.haskell.org