diff --git a/docker/Dockerfile-alpine-320 b/docker/Dockerfile-alpine-320
index 1c45e5d..d34592c 100644
--- a/docker/Dockerfile-alpine-320
+++ b/docker/Dockerfile-alpine-320
@@ -5,7 +5,7 @@ ENV TZ="Europe/Berlin"
 
 # Background: JAGS needs lapack & lapack-dev but these conflict with openblas-dev which is required by R-dev
 # Solution: first compile JAGS, then remove lapack & lapack-dev again
-RUN apk add -q --no-cache curl tar make lapack lapack-dev blas blas-dev gcc gfortran g++
+RUN apk add -q --no-cache curl tar make lapack lapack-dev blas blas-dev gcc gfortran g++ htop
 
 ### CUSTOM DEPENDENCIES 
 # These usually are not packaged in OS repositories and need to be installed from source