diff --git a/registry.toml b/registry.toml
index 13d0e95cc5..8aefe968f8 100644
--- a/registry.toml
+++ b/registry.toml
@@ -3069,6 +3069,11 @@ description = "Mercury is a logic/functional programming language which combines
 backends = ["asdf:mise-plugins/mise-meson"]
 description = "Meson is an open source build system meant to be both extremely fast, and, even more importantly, as user friendly as possible"
 
+[tools.micromamba]
+backends = ["github:mamba-org/micromamba-releases"]
+description = "Lightweight conda-compatible package manager"
+test = ["micromamba --version", "{{ version | split(pat='-') | first }}"]
+
 [tools.micronaut]
 backends = [
   "github:micronaut-projects/micronaut-starter[exe=mn]",