diff --git a/repo2docker/buildpacks/conda/install-base-env.bash b/repo2docker/buildpacks/conda/install-base-env.bash
index e8b3bb3e..ebaf7fbb 100755
--- a/repo2docker/buildpacks/conda/install-base-env.bash
+++ b/repo2docker/buildpacks/conda/install-base-env.bash
@@ -5,8 +5,8 @@ set -ex
 
 cd $(dirname $0)
 
-export MAMBA_VERSION=1.1.0
-export CONDA_VERSION=4.13.0
+export MAMBA_VERSION=1.4.0
+export CONDA_VERSION=23.1.0
 
 URL="https://anaconda.org/conda-forge/micromamba/${MAMBA_VERSION}/download/${CONDA_PLATFORM}/micromamba-${MAMBA_VERSION}-0.tar.bz2"
 
@@ -34,7 +34,6 @@ channels:
 auto_update_conda: false
 show_channel_urls: true
 update_dependencies: false
-experimental_sat_error_message: true
 # channel_priority: flexible
 EOT
 
diff --git a/tests/conda/py35-binder-dir/verify b/tests/conda/py35-binder-dir/verify
index 67ea6827..8cd1f0a9 100755
--- a/tests/conda/py35-binder-dir/verify
+++ b/tests/conda/py35-binder-dir/verify
@@ -16,13 +16,13 @@ v = out.split()[1]
 assert v[:3] == "3.5", out
 
 out = sh(["micromamba", "--version"])
-assert out == "1.1.0", out
+assert out == "1.4.0", out
 
 out = sh(["mamba", "--version"])
 assert (
     out
-    == """mamba 1.1.0
-conda 4.13.0"""
+    == """mamba 1.4.0
+conda 23.1.0"""
 ), out
 
 sh([kernel_python, "-c", "import numpy"])