diff --git a/docker/Containerfile-alpine-320 b/docker/Containerfile-alpine-320
index f2be997..5ef406a 100644
--- a/docker/Containerfile-alpine-320
+++ b/docker/Containerfile-alpine-320
@@ -25,7 +25,7 @@ COPY --link --from=jags /JAGS-4.3.2 /JAGS-4.3.2
 # 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
 # # xvfb: for graphical pkgs requiring tcl, like gWidgets2tcltk
-RUN apk add -q --no-cache curl tar make lapack lapack-dev blas blas-dev gcc gfortran g++ htop git cmake tk-dev xvfb xvfb-run xorg-server xauth xinit xz
+RUN apk add -q --no-cache curl tar make lapack lapack-dev blas blas-dev gcc gfortran g++ htop git cmake tk-dev xvfb xvfb-run xorg-server xauth xinit xz libdeflate libdeflate-dev
 
 ### CUSTOM DEPENDENCIES 
 # These usually are not packaged in OS repositories and need to be installed from source
diff --git a/docker/Containerfile-alpine-321 b/docker/Containerfile-alpine-321
index c8ddd16..6585728 100644
--- a/docker/Containerfile-alpine-321
+++ b/docker/Containerfile-alpine-321
@@ -25,7 +25,7 @@ COPY --link --from=jags /JAGS-4.3.2 /JAGS-4.3.2
 # 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
 # # xvfb: for graphical pkgs requiring tcl, like gWidgets2tcltk
-RUN apk add -q --no-cache curl tar make lapack lapack-dev blas blas-dev gcc gfortran g++ htop git cmake tk-dev xvfb xvfb-run xorg-server xauth xinit xz
+RUN apk add -q --no-cache curl tar make lapack lapack-dev blas blas-dev gcc gfortran g++ htop git cmake tk-dev xvfb xvfb-run xorg-server xauth xinit xz libdeflate libdeflate-dev
 
 ### CUSTOM DEPENDENCIES 
 # These usually are not packaged in OS repositories and need to be installed from source