diff --git a/oss-fuzz.sh b/oss-fuzz.sh
index 6dd1cd9a6..1efe6baa6 100644
--- a/oss-fuzz.sh
+++ b/oss-fuzz.sh
@@ -1,13 +1,21 @@
 #!/bin/bash
 
+# Install Go manually, since oss-fuzz ships with an outdated Go version.
+# See https://github.com/google/oss-fuzz/pull/10643.
+export CXX="${CXX} -lresolv" # required by Go 1.20
+wget https://go.dev/dl/go1.20.5.linux-amd64.tar.gz \
+  && mkdir temp-go \
+  && rm -rf /root/.go/* \
+  && tar -C temp-go/ -xzf go1.20.5.linux-amd64.tar.gz \
+  && mv temp-go/go/* /root/.go/ \
+  && rm -rf temp-go go1.20.5.linux-amd64.tar.gz
+
 (
-cd qpack
 # fuzz qpack
 compile_go_fuzzer github.com/quic-go/qpack/fuzzing Fuzz qpack_fuzzer
 )
 
 (
-cd quic-go
 # fuzz quic-go
 compile_go_fuzzer github.com/quic-go/quic-go/fuzzing/frames Fuzz frame_fuzzer
 compile_go_fuzzer github.com/quic-go/quic-go/fuzzing/header Fuzz header_fuzzer
@@ -19,8 +27,10 @@ if [ $SANITIZER == "coverage" ]; then
     # no need for corpora if coverage
     exit 0
 fi
+
 # generate seed corpora
-go generate ./fuzzing/...
+cd $GOPATH/src/github.com/quic-go/quic-go/
+go generate -x ./fuzzing/...
 
 zip --quiet -r $OUT/header_fuzzer_seed_corpus.zip fuzzing/header/corpus
 zip --quiet -r $OUT/frame_fuzzer_seed_corpus.zip fuzzing/frames/corpus