diff --git a/automamba/automamba b/automamba/automamba
index dab3c4b..9924649 100644
--- a/automamba/automamba
+++ b/automamba/automamba
@@ -12,16 +12,16 @@ base="$home/mamba"
 fi
 
 # micromamba stuff; doesn't affect python itself:
-installer_version="1.5.6" # remember to update both sha256s if you change this!
+installer_version="1.5.7" # remember to update both sha256s if you change this!
 installer_archive="micromamba-$installer_version-0.tar.bz2"
 
 releases="https://github.com/mamba-org/micromamba-releases/releases/download"
 if [ -d /C ]; then # Windows
-installer_sha256="e214c76c0ff1506c4b6f3ef31064250eb71f9c2698c108bfc29a5b31e3a8ab6f"
+installer_sha256="c62a6a273e9a2b0313d2d6e50f27222447b3a2005dc4b9fef83ccd50b5ccce64"
 installer_remote="$releases/$installer_version-0/micromamba-win-64.tar.bz2"
 installer_path="Library/bin/micromamba.exe"
 else # Linux
-installer_sha256="efe462c7ffcae8b338c7dd7b168ce8d48cfc60b48ab991d02a035c3b8d73633c"
+installer_sha256="2b92516aa575b42467805f25315bbd01454b8c7ec59ce04a5092187c4958c9a2"
 installer_remote="$releases/$installer_version-0/micromamba-linux-64.tar.bz2"
 installer_path="bin/micromamba"
 fi