diff --git a/recipes/wip/benchmarks/cargo-benchcmp/recipe.toml b/recipes/wip/benchmarks/cargo-benchcmp/recipe.toml
index 20a175942..90833c27a 100644
--- a/recipes/wip/benchmarks/cargo-benchcmp/recipe.toml
+++ b/recipes/wip/benchmarks/cargo-benchcmp/recipe.toml
@@ -1,4 +1,4 @@
-#TODO Not compiled or tested
+#TODO compiled but not tested (after cargo update)
 [source]
 git = "https://github.com/BurntSushi/cargo-benchcmp"
 [build]
diff --git a/recipes/wip/benchmarks/glassbench/recipe.toml b/recipes/wip/benchmarks/glassbench/recipe.toml
index d9365c2db..d794bd477 100644
--- a/recipes/wip/benchmarks/glassbench/recipe.toml
+++ b/recipes/wip/benchmarks/glassbench/recipe.toml
@@ -2,4 +2,7 @@
 [source]
 git = "https://github.com/Canop/glassbench"
 [build]
-template = "cargo"
+template = "custom"
+script = """
+cookbook_cargo_examples lettersorter
+"""
diff --git a/recipes/wip/benchmarks/rpc-perf/recipe.toml b/recipes/wip/benchmarks/rpc-perf/recipe.toml
index 2e08d05b5..be0a4045b 100644
--- a/recipes/wip/benchmarks/rpc-perf/recipe.toml
+++ b/recipes/wip/benchmarks/rpc-perf/recipe.toml
@@ -1,5 +1,8 @@
-#TODO Not compiled or tested
+#TODO make zstd work
 [source]
 git = "https://github.com/iopsystems/rpc-perf"
 [build]
 template = "cargo"
+dependencies = [
+    "zstd",
+]