diff --git a/recipes/conn/README.md b/recipes/conn/README.md
index cc216562..1497fc4f 100644
--- a/recipes/conn/README.md
+++ b/recipes/conn/README.md
@@ -1,6 +1,6 @@
 
 ----------------------------------
-## conn/toolVersion ##
+## conn/21a ##
 conn standalone with Matlab Compiler Runtime
 
 Example:
@@ -10,6 +10,6 @@ conn
 
 More documentation can be found here: https://web.conn-toolbox.org/tutorials
 
-To run container outside of this environment: ml conn/toolVersion
+To run container outside of this environment: ml conn/21a
 
 ----------------------------------
diff --git a/recipes/conn/build.sh b/recipes/conn/build.sh
index cce2c25a..3a633997 100644
--- a/recipes/conn/build.sh
+++ b/recipes/conn/build.sh
@@ -20,8 +20,10 @@ neurodocker generate ${neurodocker_buildMode} \
    --run="mkdir -p ${mountPointList}" \
    --matlabmcr version=2021a method=binaries \
    --workdir /opt/${toolName}-${toolVersion}/ \
-   --run="curl -fsSL --retry 5 https://www.nitrc.org/frs/download.php/12424/conn21a_glnxa64.zip \
-      | tar -xz -C /opt/${toolName}-${toolVersion}/ --strip-components 1" \
+   --install wget \
+   --run="wget --no-check-certificate --progress=bar:force -P /opt/${toolName}-${toolVersion}/ https://www.nitrc.org/frs/download.php/12424/conn${toolVersion}_glnxa64.zip \
+      && unzip -q conn${toolVersion}_glnxa64.zip -d /opt/${toolName}-${toolVersion}/ \
+      && rm -f conn${toolVersion}_glnxa64.zip" \
    --env DEPLOY_BINS=${toolName} \
    --install openjdk-8-jre \
    --env PATH=/opt/${toolName}-${toolVersion}/:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin \