diff --git a/fuzzing/README.md b/fuzzing/README.md
@@ -76,25 +76,6 @@ Contains Python files for each fuzz test.
  reason, fuzz tests should gracefully handle anticipated exception cases with a `try`/`except` block to avoid false
  positives that halt the fuzzing engine.

-### Dictionaries (`dictionaries/`)
-
-Provides hints to the fuzzing engine about inputs that might trigger unique code paths. Each fuzz target may have a
-corresponding `.dict` file. For information about dictionary syntax, refer to
-the [LibFuzzer documentation on the subject](https://llvm.org/docs/LibFuzzer.html#dictionaries).
-
-**Things to Know**:
-
-- OSS-Fuzz loads dictionary files per fuzz target if one exists with the same name, all others are ignored.
-- Most entries in the dictionary files found here are escaped hex or Unicode values that were recommended by the fuzzing
-  engine after previous runs.
-- A default set of dictionary entries are created for all fuzz targets as part of the build process, regardless of an
-  existing file here.
-- Development or updates to dictionaries should reflect the varied formats and edge cases relevant to the
-  functionalities under test.
-- Example dictionaries (some of which are used to build the default dictionaries mentioned above) can be found here:
-  - [AFL++ dictionary repository](https://github.com/AFLplusplus/AFLplusplus/tree/stable/dictionaries#readme)
-  - [Google/fuzzing dictionary repository](https://github.com/google/fuzzing/tree/master/dictionaries)
-
### OSS-Fuzz Scripts (`oss-fuzz-scripts/`)

Includes scripts for building and integrating fuzz targets with OSS-Fuzz:

diff --git a/fuzzing/dictionaries/fuzz_blob.dict b/fuzzing/dictionaries/fuzz_blob.dict
diff --git a/fuzzing/dictionaries/fuzz_config.dict b/fuzzing/dictionaries/fuzz_config.dict
diff --git a/fuzzing/oss-fuzz-scripts/build.sh b/fuzzing/oss-fuzz-scripts/build.sh
@@ -7,34 +7,13 @@ set -euo pipefail

python3 -m pip install .

-# Directory to look in for dictionaries, options files, and seed corpora:
-SEED_DATA_DIR="$SRC/seed_data"
-
-find "$SEED_DATA_DIR" \( -name '*_seed_corpus.zip' -o -name '*.options' -o -name '*.dict' \) \
-  ! \( -name '__base.*' \) -exec printf 'Copying: %s\n' {} \; \
  -exec chmod a-x {} \; \
  -exec cp {} "$OUT" \;

# Build fuzzers in $OUT.
find "$SRC/gitpython/fuzzing" -name 'fuzz_*.py' -print0 | while IFS= read -r -d '' fuzz_harness; do
  compile_python_fuzzer "$fuzz_harness" --add-binary="$(command -v git):."
-
-  common_base_dictionary_filename="$SEED_DATA_DIR/__base.dict"
-  if [[ -r "$common_base_dictionary_filename" ]]; then
-    # Strip the `.py` extension from the filename and replace it with `.dict`.
-    fuzz_harness_dictionary_filename="$(basename "$fuzz_harness" .py).dict"
-    output_file="$OUT/$fuzz_harness_dictionary_filename"
-
-    printf 'Appending %s to %s\n' "$common_base_dictionary_filename" "$output_file"
-    if [[ -s "$output_file" ]]; then
-      # If a dictionary file for this fuzzer already exists and is not empty,
-      # we append a new line to the end of it before appending any new entries.
-      #
-      # LibFuzzer will happily ignore multiple empty lines in a dictionary but fail with an error
-      # if any single line has incorrect syntax (e.g., if we accidentally add two entries to the same line.)
-      # See docs for valid syntax: https://llvm.org/docs/LibFuzzer.html#id32
-      echo >>"$output_file"
-    fi
-    cat "$common_base_dictionary_filename" >>"$output_file"
-  fi
done
diff --git a/fuzzing/oss-fuzz-scripts/container-environment-bootstrap.sh b/fuzzing/oss-fuzz-scripts/container-environment-bootstrap.sh
@@ -9,23 +9,20 @@ set -euo pipefail
# Prerequisites #
#################

-for cmd in python3 git wget rsync; do
  command -v "$cmd" >/dev/null 2>&1 || {
    printf '[%s] Required command %s not found, exiting.\n' "$(date '+%Y-%m-%d %H:%M:%S')" "$cmd" >&2
    exit 1
  }
done

-SEED_DATA_DIR="$SRC/seed_data"
-mkdir -p "$SEED_DATA_DIR"
-
#############
# Functions #
#############

download_and_concatenate_common_dictionaries() {
  # Assign the first argument as the target file where all contents will be concatenated
-  target_file="$1"

  # Shift the arguments so the first argument (target_file path) is removed
  # and only URLs are left for the loop below.
@@ -38,22 +35,61 @@ download_and_concatenate_common_dictionaries() {
  done
}

-fetch_seed_corpora() {
-  # Seed corpus zip files are hosted in a separate repository to avoid additional bloat in this repo.
-  git clone --depth 1 https://github.com/gitpython-developers/qa-assets.git qa-assets &&
-    rsync -avc qa-assets/gitpython/corpra/ "$SEED_DATA_DIR/" &&
-    rm -rf qa-assets # Clean up the cloned repo to keep the Docker image as slim as possible.
}

########################
# Main execution logic #
########################

-fetch_seed_corpora

-download_and_concatenate_common_dictionaries "$SEED_DATA_DIR/__base.dict" \
-  "https://raw.githubusercontent.com/google/fuzzing/master/dictionaries/utf8.dict" \
-  "https://raw.githubusercontent.com/google/fuzzing/master/dictionaries/url.dict"

# The OSS-Fuzz base image has outdated dependencies by default so we upgrade them below.
python3 -m pip install --upgrade pip