diff --git a/Dockerfile b/Dockerfile
index 8fb2c6d0..32a26a39 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:bookworm
+FROM debian:trixie
 LABEL org.opencontainers.image.source https://github.com/hathitrust/feed
 
 ARG UNAME=ingest
@@ -18,7 +18,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     git \
     gpg \
     gpg-agent \
-    grokj2k-tools \
     imagemagick \
     libdate-manip-perl \
     libdbd-mysql-perl \
@@ -49,7 +48,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     libxerces-c3-dev \
     libxml-libxml-perl \
     libyaml-libyaml-perl \
-    openjdk-17-jre-headless \
+    openjdk-21-jre-headless \
     perl \
     rclone \
     unzip \
@@ -58,9 +57,15 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 COPY etc/imagemagick-policy.xml /etc/ImageMagick-6/policy.xml
 
 COPY etc/jhove-auto-install.xml /tmp/jhove-auto-install.xml
-RUN curl https://hathitrust.github.io/jhove/jhove-xplt-installer-latest.jar -o /tmp/jhove-installer.jar
+RUN curl -L https://software.openpreservation.org/releases/jhove/1.34/jhove-installer-1.34.0.jar -o /tmp/jhove-installer.jar
 RUN java -jar /tmp/jhove-installer.jar /tmp/jhove-auto-install.xml
 
+COPY grok-debian-trixie.zip /tmp
+RUN unzip /tmp/grok-debian-trixie.zip -d /tmp
+RUN mv /tmp/grok-debian-trixie/lib/* /usr/local/lib
+RUN mv /tmp/grok-debian-trixie/bin/* /usr/local/bin
+RUN ldconfig
+
 RUN groupadd -g $GID -o $UNAME
 RUN useradd -m -d $FEED_HOME -u $UID -g $GID -o -s /bin/bash $UNAME
 
diff --git a/bin/compress_tif_jp2.pl b/bin/compress_tif_jp2.pl
index 32801c78..c0ce42dd 100755
--- a/bin/compress_tif_jp2.pl
+++ b/bin/compress_tif_jp2.pl
@@ -48,7 +48,7 @@
     if not defined $grk_compress or !-x $grk_compress;
 
     # Single quality level with reqested PSNR of 32dB. See DEV-10
-    system(qq($grk_compress -i "$infile" -o "$outfile" -p RLCP -n $levels -SOP -EPH -M 62 -I -q 32))
+    system(qq($grk_compress -i "$infile" -o "$outfile" -p RLCP -n $levels -S -E -M 62 -I -q 32))
 
         and die("grk_compress returned $?");
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 7b3ed668..06c8ccb8 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -144,7 +144,7 @@ services:
       - "9091:9091"
     healthcheck:
       <<: *healthcheck-defaults
-      test: [ "CMD", "wget", "--quiet", "--tries=1", "-O", "/dev/null", "pushgateway:9091/-/healthy" ]
+      test: [ "CMD", "wget", "--quiet", "--tries=1", "-O", "/dev/null", "http://127.0.0.1:9091/-/healthy" ]
 
 
   rabbitmq:
diff --git a/etc/config/base_config.yml b/etc/config/base_config.yml
index 1d1a01e2..286d697b 100644
--- a/etc/config/base_config.yml
+++ b/etc/config/base_config.yml
@@ -97,7 +97,7 @@ jhove: /opt/jhove/jhove
 jhoveconf: /opt/jhove/conf/jhove.conf
 xerces: /usr/local/bin/validate-cache
 xerces_cache: /usr/local/feed/etc/schema.cache
-grk_compress: /usr/bin/grk_compress
-grk_decompress: /usr/bin/grk_decompress
+grk_compress: /usr/local/bin/grk_compress
+grk_decompress: /usr/local/bin/grk_decompress
 epubcheck: /usr/bin/java -jar /usr/bin/epubcheck
 
diff --git a/etc/config/premis.yml b/etc/config/premis.yml
index 6d7c7bf2..ee299bda 100644
--- a/etc/config/premis.yml
+++ b/etc/config/premis.yml
@@ -16,13 +16,13 @@ premis_tools:
 # FIXME get these versions from debian packages
 # Set to the version of Xerces you are using (must be 3.0 or later)
   XERCES: qq(Xerces-C 3.2.4)
-  JHOVE: qq(JHOVE 1.32.0)
+  JHOVE: qq(JHOVE 1.34.0)
 # Leave as is.
   DIGEST_MD5: perl_mod_version('Digest::MD5');
 # GnuPG is not needed unless downloading packages from Google.
   GPG: qq(GnuPG 2.22.40)
   ZIP: qq(Zip 3.0)
-  GRK_COMPRESS: qq(grok-j2k 10.0.5)
+  GRK_COMPRESS: qq(grok-j2k 20.0.4)
   EPUBCHECK: qq(epubcheck 4.2.6)
   CLAMAV: qq(ClamAV 1.0.5)
 
diff --git a/grok-debian-trixie.zip b/grok-debian-trixie.zip
new file mode 100644
index 00000000..66180674
Binary files /dev/null and b/grok-debian-trixie.zip differ
diff --git a/lib/HTFeed/Image/Grok.pm b/lib/HTFeed/Image/Grok.pm
index 041fde1d..30aca2bf 100644
--- a/lib/HTFeed/Image/Grok.pm
+++ b/lib/HTFeed/Image/Grok.pm
@@ -48,12 +48,12 @@ sub compress {
         "-i '$infile'",
         "-o '$outfile'",
         "-p RLCP", # the rest of these args never change,
-        "-SOP",    # so for now leave them hard-coded
-        "-EPH",
+        "-S",    # so for now leave them hard-coded
+        "-E",
         "-M 62",
         "-I",
         "-q 32",
-        "> /dev/null 2>&1"
+        #        "> /dev/null 2>&1"
     );
 
     my $sys_ret_val = system($full_cmd);
@@ -79,7 +79,7 @@ sub decompress {
         "$base_cmd",
         "-i '$infile'",
         "-o '$outfile'",
-        "> /dev/null 2>&1"
+        #        "> /dev/null 2>&1"
     );
     my $sys_ret_val = system($full_cmd);