diff --git a/projects/assimp/build.sh b/projects/assimp/build.sh
index 3fa508605f6c..8d38459badcb 100644
--- a/projects/assimp/build.sh
+++ b/projects/assimp/build.sh
@@ -15,6 +15,9 @@
 #
 ################################################################################
 
+rm -rf contrib/googletest
+git clone https://github.com/google/googletest contrib/googletest
+
 # generate build env and build assimp
 cmake CMakeLists.txt -G "Ninja" -DBUILD_SHARED_LIBS=OFF -DASSIMP_BUILD_ZLIB=ON \
                                 -DASSIMP_BUILD_TESTS=ON -DASSIMP_BUILD_ASSIMP_TOOLS=OFF \
diff --git a/projects/cpuinfo/build.sh b/projects/cpuinfo/build.sh
index 2400478fd25e..6d50ac292a5f 100755
--- a/projects/cpuinfo/build.sh
+++ b/projects/cpuinfo/build.sh
@@ -20,7 +20,11 @@ sed -i 's/"\/proc\/cpuinfo"/"\/tmp\/libfuzzer.config"/g' src/x86/linux/cpuinfo.c
 sed -i 's/"\/sys\/devices\/system\/cpu\/kernel_max"/"\/tmp\/libfuzzer.config"/g' src/linux/processors.c
 mkdir build
 cd build
-cmake ..
+cmake \
+    -DCPUINFO_BUILD_UNIT_TESTS=OFF \
+    -DCPUINFO_BUILD_MOCK_TESTS=OFF \
+    -DCPUINFO_BUILD_BENCHMARKS=OFF \
+    ..
 make
 
 
diff --git a/projects/cxxopts/build.sh b/projects/cxxopts/build.sh
index dd264f367e4c..234e65eb58f6 100755
--- a/projects/cxxopts/build.sh
+++ b/projects/cxxopts/build.sh
@@ -15,5 +15,6 @@
 #
 ################################################################################
 
+export CXXFLAGS="${CXXFLAGS} -std=c++17"
 export USE_BAZEL_VERSION=7.4.0
 bazel_build_fuzz_tests
diff --git a/projects/opencv/build.sh b/projects/opencv/build.sh
index 33e96c08606a..48709c325ac4 100755
--- a/projects/opencv/build.sh
+++ b/projects/opencv/build.sh
@@ -34,7 +34,7 @@ for fuzzer in core_fuzzer filestorage_read_file_fuzzer \
    filestorage_read_filename_fuzzer filestorage_read_string_fuzzer \
    generateusergallerycollage_fuzzer imdecode_fuzzer imencode_fuzzer \
    imread_fuzzer readnetfromtensorflow_fuzzer; do
-$CXX $CXXFLAGS $LIB_FUZZING_ENGINE $fuzzer.cc -std=c++11 \
+$CXX $CXXFLAGS $LIB_FUZZING_ENGINE $fuzzer.cc -std=c++17 \
 -I$install_dir/include/opencv4 -L$install_dir/lib \
 -L$install_dir/lib/opencv4/3rdparty \
 -lopencv_dnn -lopencv_objdetect -lopencv_photo -lopencv_ml -lopencv_gapi \
diff --git a/projects/spdlog/build.sh b/projects/spdlog/build.sh
index 25b1ec0c3c72..62a9cea5af25 100755
--- a/projects/spdlog/build.sh
+++ b/projects/spdlog/build.sh
@@ -21,7 +21,7 @@ cmake -DSPDLOG_BUILD_TESTS=ON . && make -j$(nproc)
 # build fuzzers
 for f in $(find $SRC -name '*_fuzzer.cc'); do
     b=$(basename -s .cc $f)
-    $CXX $CXXFLAGS -std=c++11 -Iinclude \
+    $CXX $CXXFLAGS -std=c++17 -Iinclude \
     $f $LIB_FUZZING_ENGINE ./libspdlog.a \
     -o $OUT/$b
 done
diff --git a/projects/zopfli/build.sh b/projects/zopfli/build.sh
index 14dac027bb94..2da2905e7ad0 100755
--- a/projects/zopfli/build.sh
+++ b/projects/zopfli/build.sh
@@ -22,6 +22,6 @@ make -j$(nproc) libzopfli.a
 # build fuzzers
 for fuzzers in $(find $SRC -name '*_fuzzer.cc'); do
   base=$(basename -s .cc $fuzzers)
-  $CXX $CXXFLAGS -std=c++11 -I. -Isrc/zopfli \
+  $CXX $CXXFLAGS -std=c++17 -I. -Isrc/zopfli \
   $fuzzers ./libzopfli.a -o $OUT/$base $LIB_FUZZING_ENGINE
 done