diff --git a/projects/duckdb/build.sh b/projects/duckdb/build.sh
index 082feffefe8e..acc8b0ab9d1b 100755
--- a/projects/duckdb/build.sh
+++ b/projects/duckdb/build.sh
@@ -19,7 +19,7 @@ make relassert CRASH_ON_ASSERT=1 DISABLE_SANITIZER=1
 EXTENSION_LIBS=$(find ./build/relassert/extension/ -name "*.a")
 THIRD_PARTY_LIBS=$(find ./build/relassert/third_party/ -name "*.a")
 $CXX $CXXFLAGS $LIB_FUZZING_ENGINE ./test/ossfuzz/parse_fuzz_test.cpp \
-    -o $OUT/parse_fuzz_test -I./ -I./src/include \
+    -o $OUT/parse_fuzz_test -I./ -I./src/include -I./third_party/fmt/include \
     -Wl,--start-group \
     ./build/relassert/src/libduckdb_static.a \
     ${EXTENSION_LIBS} ${THIRD_PARTY_LIBS} \
diff --git a/projects/pjsip/Dockerfile b/projects/pjsip/Dockerfile
index f13c2e0b1696..41811ce2e521 100644
--- a/projects/pjsip/Dockerfile
+++ b/projects/pjsip/Dockerfile
@@ -14,7 +14,7 @@
 #
 ################################################################################
 FROM gcr.io/oss-fuzz-base/base-builder:ubuntu-24-04
-RUN apt-get update && apt-get install -y autoconf libtool-bin pkg-config libssl-dev zlib1g-dev
+RUN apt-get update && apt-get install -y autoconf libtool-bin pkg-config libssl-dev zlib1g-dev libopus-dev libvpx-dev
 RUN git clone https://github.com/pjsip/pjproject pjsip
 COPY build.sh $SRC/
 WORKDIR $SRC/pjsip/
diff --git a/projects/pjsip/build.sh b/projects/pjsip/build.sh
index 9facb78ffc89..ebcbd5183458 100644
--- a/projects/pjsip/build.sh
+++ b/projects/pjsip/build.sh
@@ -23,6 +23,12 @@ export LDFLAGS="$CFLAGS"
 --disable-speex-aec --disable-g7221-codec \
 --disable-resample --disable-libwebrtc --disable-libyuv
 
+# Force static linking of libvpx and libopus so the fuzzers do not depend on
+# .so files that are absent from the OSS-Fuzz runner image. libvpx-dev and
+# libopus-dev both ship .a archives in /usr/lib/x86_64-linux-gnu/.
+sed -i 's|-lvpx|/usr/lib/x86_64-linux-gnu/libvpx.a|g' build.mak
+sed -i 's|-lopus|/usr/lib/x86_64-linux-gnu/libopus.a|g' build.mak
+
 make dep
 make -j$(nproc) --ignore-errors
 make fuzz
diff --git a/projects/pypy3/Dockerfile b/projects/pypy3/Dockerfile
new file mode 100644
index 000000000000..456bb5ec0f94
--- /dev/null
+++ b/projects/pypy3/Dockerfile
@@ -0,0 +1,29 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+################################################################################
+
+
+FROM gcr.io/oss-fuzz-base/base-builder
+
+RUN apt-get update && \
+    apt-get install -y gcc make libffi-dev pkg-config \
+    zlib1g-dev libbz2-dev libsqlite3-dev libncurses5-dev \
+    libexpat1-dev libssl-dev libgdbm-dev tk-dev libgc-dev \
+    liblzma-dev libncursesw5-dev \
+    pypy
+
+RUN git clone --depth 1 --branch py3.11 https://github.com/pypy/pypy.git pypy
+RUN git clone --depth 1 --branch main https://github.com/StanFromIreland/pypy-fuzz.git
+WORKDIR pypy
+COPY build.sh $SRC/
diff --git a/projects/pypy3/build.sh b/projects/pypy3/build.sh
new file mode 100644
index 000000000000..6775d57b547b
--- /dev/null
+++ b/projects/pypy3/build.sh
@@ -0,0 +1,56 @@
+#!/bin/bash -eu
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+################################################################################
+
+case $SANITIZER in
+  address)   SAN=-fsanitize=address ;;
+  undefined) SAN=-fsanitize=undefined ;;
+  *)         SAN="" ;;
+esac
+
+CFLAGS=$(echo "$CFLAGS" | sed 's/-f[no-]*sanitize[^ ]*//g')
+
+cd $SRC/pypy/pypy/goal
+CC=clang pypy ../../rpython/bin/rpython --opt=2 --shared --source
+
+BUILD_DIR=$(dirname $(find /tmp/usession-py3.11-* -name 'Makefile' | head -1))
+make lldebug -j$(nproc) -C $BUILD_DIR "CC=clang $SAN"
+cp $BUILD_DIR/pypy3*-c $BUILD_DIR/libpypy3*-c.so .
+ln -sf libpypy3.11-c.so libpypy3-c.so
+
+export LD_LIBRARY_PATH=$SRC/pypy/pypy/goal
+PYPY=$SRC/pypy/pypy/goal/pypy3.11-c
+
+# Build fuzz targets
+cd $SRC/pypy-fuzz
+while read -r name; do
+    CC=clang CFLAGS="$SAN" LDSHARED="clang -shared $SAN" $PYPY build_cffi_fuzz.py "$name"
+    clang $SAN $CFLAGS -fsanitize=fuzzer-no-link fuzzer_stub.c ./_pypy_fuzz_${name}.so \
+        -L$SRC/pypy/pypy/goal -lpypy3-c -Wl,-rpath,'$ORIGIN' \
+        $LIB_FUZZING_ENGINE -rdynamic -ldl -o fuzzer-${name}
+
+    cp fuzzer-${name} _pypy_fuzz_${name}.so fuzz_${name}.py $OUT/
+    if [ -d "corp-${name}" ]; then
+        zip -j "$OUT/fuzzer-${name}_seed_corpus.zip" corp-${name}/*
+    fi
+    if [ -f "dictionaries/fuzzer-${name}.dict" ]; then
+        cp "dictionaries/fuzzer-${name}.dict" "$OUT/"
+    fi
+done < fuzz_targets.txt
+
+cp $SRC/pypy/pypy/goal/libpypy3.11-c.so $OUT/libpypy3-c.so
+cp ubsan_suppressions.txt $OUT/
+cp -R $SRC/pypy/lib-python $OUT/
+cp -R $SRC/pypy/lib_pypy $OUT/
diff --git a/projects/pypy3/project.yaml b/projects/pypy3/project.yaml
new file mode 100644
index 000000000000..5c350e67803d
--- /dev/null
+++ b/projects/pypy3/project.yaml
@@ -0,0 +1,9 @@
+homepage: "https://pypy.org/"
+language: c
+main_repo: "https://github.com/pypy/pypy"
+primary_contact: "stanulbrych@gmail.com"
+auto_ccs:
+ - "matti.picus@gmail.com"
+ - "cfbolz@gmail.com"
+sanitizers:
+ - undefined