diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
new file mode 100644
index 0000000..836f82d
--- /dev/null
+++ b/.github/workflows/bench.yml
@@ -0,0 +1,38 @@
+on:
+  pull_request:
+    branches:
+      - v2*
+
+name: bench
+
+jobs:
+  bench:
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          use-public-rspm: true
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: |
+            any::bench
+            any::nycflights13
+            any::remotes
+      - name: install current version
+        run: remotes::install_github("ropensci/readODS")
+        shell: Rscript {0}
+      - name: run bench.R with the current version
+        run: Rscript benchmark/bench.R HEAD
+      - name: install PR version
+        run: remotes::install_local(".", upgrade = "never")
+        shell: Rscript {0}
+      - name: run bench.R with the PR version
+        run: Rscript benchmark/bench.R PR
+      - name: Print the benchmark
+        run: Rscript benchmark/print_bench.R
diff --git a/benchmark/bench.R b/benchmark/bench.R
new file mode 100644
index 0000000..092fb77
--- /dev/null
+++ b/benchmark/bench.R
@@ -0,0 +1,4 @@
+#!/usr/bin/env Rscript
+args <- commandArgs(trailingOnly = TRUE)
+
+saveRDS(bench::mark(readODS::read_ods(readODS::write_ods(nycflights13::flights)), min_iterations = 3), paste0("benchmark/", args[1], "_write_ods_.RDS"))
diff --git a/benchmark/print_bench.R b/benchmark/print_bench.R
new file mode 100644
index 0000000..ba9d214
--- /dev/null
+++ b/benchmark/print_bench.R
@@ -0,0 +1,9 @@
+library(bench)
+prefixes <- c("HEAD", "PR")
+
+## TODO: make this a GH comment
+
+for (prefix in prefixes) {
+    cat(prefix, "\n")
+    cat(readRDS(paste0("benchmark/", prefix, "_write_ods_.RDS"))$median, "\n")
+}
diff --git a/tests/testdata/multiline_cells.ods b/tests/testdata/multiline_cells.ods
old mode 100755
new mode 100644