diff --git a/src/Makevars.in b/src/Makevars.in
index 65c84ea..6898596 100644
--- a/src/Makevars.in
+++ b/src/Makevars.in
@@ -39,7 +39,7 @@ $(STATLIB):
 
 	export CARGO_HOME=$(CARGOTMP) && \
 	export PATH="$(PATH):$(HOME)/.cargo/bin" && \
-	@PANIC_EXPORTS@RUSTFLAGS="$(RUSTFLAGS) --print=native-static-libs" cargo build @CRAN_FLAGS@ --lib @PROFILE@ --manifest-path=./rust/Cargo.toml --target-dir $(TARGET_DIR) @TARGET@
+	@SKIP_GENERATE@@PANIC_EXPORTS@RUSTFLAGS="$(RUSTFLAGS) --print=native-static-libs" cargo build @CRAN_FLAGS@ --lib @PROFILE@ --manifest-path=./rust/Cargo.toml --target-dir $(TARGET_DIR) @TARGET@
 
 	# Always clean up CARGOTMP
 	rm -Rf $(CARGOTMP);
diff --git a/src/Makevars.win.in b/src/Makevars.win.in
index 7f0a787..1fe9531 100644
--- a/src/Makevars.win.in
+++ b/src/Makevars.win.in
@@ -35,7 +35,7 @@ $(STATLIB):
 	export CARGO_HOME=$(CARGOTMP) && \
 	export LIBRARY_PATH="$(LIBRARY_PATH);$(CURDIR)/$(TARGET_DIR)/libgcc_mock" && \
 	. rust/build-env-win.sh && \
-	RUSTFLAGS="$(RUSTFLAGS) --print=native-static-libs" cargo build @CRAN_FLAGS@ --target=$(TARGET) --lib @PROFILE@ --manifest-path=rust/Cargo.toml --target-dir=$(TARGET_DIR)
+	@SKIP_GENERATE@RUSTFLAGS="$(RUSTFLAGS) --print=native-static-libs" cargo build @CRAN_FLAGS@ --target=$(TARGET) --lib @PROFILE@ --manifest-path=rust/Cargo.toml --target-dir=$(TARGET_DIR)
 
 	# Always clean up CARGOTMP
 	rm -Rf $(CARGOTMP);
diff --git a/tools/config.R b/tools/config.R
index aa035f7..63f4ed4 100644
--- a/tools/config.R
+++ b/tools/config.R
@@ -27,11 +27,13 @@ if (!is_not_cran) {
 
 # we set cran flags only if NOT_CRAN is empty and if
 # the vendored crates are present.
-.cran_flags <- ifelse(
-  !is_not_cran && vendor_exists,
-  "-j 2 --offline",
-  ""
-)
+is_cran_build <- !is_not_cran && vendor_exists
+
+.cran_flags <- ifelse(is_cran_build, "-j 2 --offline", "")
+
+# The vendored tree-sitter-ggsql crate includes a pre-generated parser.c,
+# so we skip running `tree-sitter generate` (which requires tree-sitter-cli).
+.skip_generate <- ifelse(is_cran_build, "GGSQL_SKIP_GENERATE=1 ", "")
 
 # when DEBUG env var is present we use `--debug` build
 .profile <- ifelse(is_debug, "", "--release")
@@ -123,6 +125,7 @@ new_txt <- gsub("@CRAN_FLAGS@", .cran_flags, mv_txt) |>
   gsub("@CLEAN_TARGET@", .clean_targets, x = _) |>
   gsub("@LIBDIR@", .libdir, x = _) |>
   gsub("@TARGET@", .target, x = _) |>
+  gsub("@SKIP_GENERATE@", .skip_generate, x = _) |>
   gsub("@PANIC_EXPORTS@", .panic_exports, x = _) |>
   gsub("@ODBC_LIBS@", .odbc_libs, x = _)