diff --git a/README.md b/README.md
index 650d1f4..8fa248f 100644
--- a/README.md
+++ b/README.md
@@ -24,32 +24,32 @@ this container also has a few other advantages:
 2. It can run with a variety of setups: Docker, Podman, K8S, OpenShift, etc...
 3. It can be used as a basis for other P4 runtime testing suites.
 4. It's much smaller than a VM image.
-5. When converted into a singularity container, it can be launched as a single
-   binary executable.
+5. When converted into a Apptainer SIF, it can be launched as a single binary
+   executable.
 
 How to Use
 ----------
 
 There are two ways of launching P4-in-a-Bottle:
 
-### Singularity
+### Apptainer
 
-Singularity is a container runtime by Sylabs developed specificly for software
+Apptainer is a container runtime by Sylabs developed specificly for software
 that require low-level access to hardware (i.e. NVIDIA drivers, network
 devices). This is great for P4-in-a-Bottle, since Mininet requires access to
 networking kernel components to work.
 
-Unfortunately, Singularity only works natively on Linux, so if you're on Mac or
+Unfortunately, Apptainer only works natively on Linux, so if you're on Mac or
 Windows (without WSL), you're out-of-luck here and should proceed to the docker
 instructions below.
 
-To use P4-in-a-Bottle with Singularity:
-1. Install singularity from [GitHub](https://github.com/sylabs/singularity/releases).
+To use P4-in-a-Bottle with Apptainer:
+1. Install Apptainer from [GitHub](https://github.com/apptainer/apptainer/releases).
 2. Clone and cd into this repository.
 3. Download a pre-built image
    [p4iab.sif](https://git.inkweaver.net/inkweaver/P4-in-a-Bottle/releases)
    and place it in the same directory alongside `README.md`.
-4. Run `make sc-run`. A shared directory `shared/` will be created to allow
+4. Run `make app-run`. A shared directory `shared/` will be created to allow
    you to move files between the container and your system.
 
 ### Docker
@@ -81,7 +81,7 @@ $ make .docker_build
 # Building a docker image that can be imported on other machines
 $ make p4iab.tar.gz
 
-# Building a singularity image (This depends on the docker image)
+# Building a Apptainer image (This depends on the docker image)
 $ make p4iab.sif
 
 # Cleanup any cached artifacts