diff --git a/projects/sleuthkit/build.sh b/projects/sleuthkit/build.sh
index c6161409b..aca1b6ab5 100755
--- a/projects/sleuthkit/build.sh
+++ b/projects/sleuthkit/build.sh
@@ -48,16 +48,16 @@ declare -A TSK_VS_TYPES=(
 # pool layer.
 $CXX $CXXFLAGS -std=c++14 -I.. -I. -Itsk \
     $SRC/sleuthkit_fls_apfs_fuzzer.cc -o $OUT/sleuthkit_fls_apfs_fuzzer \
-    $LIB_FUZZING_ENGINE $SRC/sleuthkit/tsk/.libs/libtsk.a
+    $LIB_FUZZING_ENGINE $SRC/sleuthkit/tsk/.libs/libtsk.a -lz
 
 for type in ${!TSK_FS_TYPES[@]}; do
   $CXX $CXXFLAGS -std=c++14 -I.. -I. -Itsk -DFSTYPE=${TSK_FS_TYPES[$type]} \
       $SRC/sleuthkit_fls_fuzzer.cc -o $OUT/sleuthkit_fls_${type}_fuzzer \
-      $LIB_FUZZING_ENGINE $SRC/sleuthkit/tsk/.libs/libtsk.a
+      $LIB_FUZZING_ENGINE $SRC/sleuthkit/tsk/.libs/libtsk.a -lz
 done
 
 for type in ${!TSK_VS_TYPES[@]}; do
   $CXX $CXXFLAGS -std=c++14 -I.. -I. -Itsk -DVSTYPE=${TSK_VS_TYPES[$type]} \
       $SRC/sleuthkit_mmls_fuzzer.cc -o $OUT/sleuthkit_mmls_${type}_fuzzer \
-      $LIB_FUZZING_ENGINE $SRC/sleuthkit/tsk/.libs/libtsk.a
+      $LIB_FUZZING_ENGINE $SRC/sleuthkit/tsk/.libs/libtsk.a -lz
 done