diff --git a/.gitignore b/.gitignore
index 6c02bffbab..ab462fe4b2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,7 @@ config/
 
 # pyenv
 .python-version
+
+# Default path for Juno DB files.  It will get created if you follow the
+# README and/or run `./build/juno` command.
+juno/
diff --git a/README.md b/README.md
index 1fdd6e6323..66e2d948ae 100644
--- a/README.md
+++ b/README.md
@@ -49,18 +49,20 @@
   the official Golang [download](https://go.dev/doc/install) page.
 - [Rust](https://www.rust-lang.org/tools/install).
 - A C compiler: `gcc` or `clang`.
-- Install `jemalloc` on your system:
+- Install `jemalloc` and `pkg-config` on your system:
   
   - macOS
 
     ```bash
     brew install jemalloc
+    brew install pkg-config
     ```
 
   - Ubuntu
 
     ```bash
     sudo apt-get install -y libjemalloc-dev
+    sudo apt-get install -y pkg-config
     ```
 
 - To ensure a successful build, you either need to synchronize the tags from the upstream repository or create a new tag.