diff --git a/docs/source/changelog.rst b/docs/source/changelog.rst
index 59903ce2..1ec6f5aa 100644
--- a/docs/source/changelog.rst
+++ b/docs/source/changelog.rst
@@ -13,6 +13,8 @@ New features
   :user:`davidanthoff`
 - Set JULIA_PROJECT globally, so that every julia instance starts with the
   julia environment activated in :pr:`612` by :user:`davidanthoff`.
+- Update Miniconda version to 4.5.12and Conda version to 4.6.11  in :pr:`637` by
+  :user:`jhamman`
 
 API changes
 -----------
diff --git a/repo2docker/buildpacks/conda/install-miniconda.bash b/repo2docker/buildpacks/conda/install-miniconda.bash
index 99af584e..fa728914 100755
--- a/repo2docker/buildpacks/conda/install-miniconda.bash
+++ b/repo2docker/buildpacks/conda/install-miniconda.bash
@@ -7,7 +7,7 @@ MINICONDA_VERSION=4.5.12
 CONDA_VERSION=4.6.11
 # Only MD5 checksums are available for miniconda
 # Can be obtained from https://repo.continuum.io/miniconda/
-MD5SUM="4be03f925e992a8eda03758b72a77298"
+MD5SUM="866ae9dff53ad0874e1d1a60b1ad1ef8"
 
 URL="https://repo.continuum.io/miniconda/Miniconda3-${MINICONDA_VERSION}-Linux-x86_64.sh"
 INSTALLER_PATH=/tmp/miniconda-installer.sh