diff --git a/docker/Containerfile-alpine-320 b/docker/Containerfile-alpine-320
index f67a651..2dfe34b 100644
--- a/docker/Containerfile-alpine-320
+++ b/docker/Containerfile-alpine-320
@@ -1,4 +1,4 @@
-FROM alpine:3.20.3 AS jags
+FROM alpine:3.21.0 AS jags
 
 RUN apk add -q --no-cache curl tar make lapack lapack-dev blas blas-dev gcc gfortran g++ git cmake tk-dev  xz
 
@@ -7,7 +7,7 @@ RUN apk add -q --no-cache curl tar make lapack lapack-dev blas blas-dev gcc gfor
 RUN curl -s -L -O https://sourceforge.net/projects/mcmc-jags/files/JAGS/4.x/Source/JAGS-4.3.2.tar.gz && \
   tar -xzf JAGS-4.3.2.tar.gz && cd JAGS-4.3.2 && ./configure --enable-silent-rules && make 2>&1 
 
-FROM alpine:3.20.3 AS final
+FROM alpine:3.21.0 AS final
 
 ARG R_VERSION=4.4.2
 ENV PATH=/opt/R/${R_VERSION}/bin:$PATH