diff --git a/projects/xmlsec/Dockerfile b/projects/xmlsec/Dockerfile
index 75814fcc1..013c53078 100644
--- a/projects/xmlsec/Dockerfile
+++ b/projects/xmlsec/Dockerfile
@@ -16,7 +16,7 @@
 
 FROM gcr.io/oss-fuzz-base/base-builder
 RUN apt-get update && apt-get install -y make autoconf automake libtool pkg-config \
-    libssl-dev libxslt-dev wget liblzma-dev
+    libssl-dev wget liblzma-dev python-dev python3-dev
 
 RUN git clone --depth 1 https://github.com/lsh123/xmlsec
 RUN git clone --depth 1 https://gitlab.gnome.org/GNOME/libxml2.git
diff --git a/projects/xmlsec/build.sh b/projects/xmlsec/build.sh
index b2976c3d9..bb601a79c 100755
--- a/projects/xmlsec/build.sh
+++ b/projects/xmlsec/build.sh
@@ -28,7 +28,7 @@ make -j$(nproc) all
 make install
 
 cd $SRC/libxslt
-./autogen.sh --prefix="$XMLSEC_DEPS_PATH"
+./autogen.sh --prefix="$XMLSEC_DEPS_PATH" --with-libxml-src=${SRC}/libxml2
 make -j$(nproc)
 make install
 
@@ -40,7 +40,8 @@ make -j$(nproc) all
 
 for file in $SRC/xmlsec/tests/oss-fuzz/*_target.c; do
     b=$(basename $file _target.c)
-    $CC $CFLAGS -c $file -I /usr/include/libxml2 -I ./include/ \
+    echo -e "#include <stdint.h>\n$(cat $file)" > $file
+    $CC $CFLAGS -c $file -I${XMLSEC_DEPS_PATH=}/include/libxml2 -I${XMLSEC_DEPS_PATH=}/include/ -I ./include/ \
     -o $OUT/${b}_target.o
     $CXX $CXXFLAGS $OUT/${b}_target.o ./src/.libs/libxmlsec1.a \
     ./src/openssl/.libs/libxmlsec1-openssl.a $LIB_FUZZING_ENGINE \