diff --git a/sys-cluster/charliecloud/charliecloud-0.10.ebuild b/sys-cluster/charliecloud/charliecloud-0.10.ebuild
index fdf652c5e31a4..b5e0b1e21ce38 100644
--- a/sys-cluster/charliecloud/charliecloud-0.10.ebuild
+++ b/sys-cluster/charliecloud/charliecloud-0.10.ebuild
@@ -21,7 +21,7 @@ HOMEPAGE="https://hpc.github.io/charliecloud/"
 
 SLOT="0"
 LICENSE="Apache-2.0"
-IUSE="doc examples +pv"
+IUSE="doc examples +pv squashfuse"
 
 # Extensive test suite exists, but downloads container images
 # directly and via Docker and installs packages inside using apt/yum.
@@ -32,6 +32,7 @@ REQUIRED_USE="${PYTHON_REQUIRED_USE}"
 
 RDEPEND="${PYTHON_DEPS}
 	pv? ( sys-apps/pv )
+	squashfuse? ( sys-fs/squashfuse )
 "
 DEPEND="doc? (
 		dev-python/sphinx[${PYTHON_USEDEP}]
diff --git a/sys-cluster/charliecloud/charliecloud-9999.ebuild b/sys-cluster/charliecloud/charliecloud-9999.ebuild
index a10f56497f107..dae07ff3e2730 100644
--- a/sys-cluster/charliecloud/charliecloud-9999.ebuild
+++ b/sys-cluster/charliecloud/charliecloud-9999.ebuild
@@ -21,7 +21,7 @@ HOMEPAGE="https://hpc.github.io/charliecloud/"
 
 SLOT="0"
 LICENSE="Apache-2.0"
-IUSE="doc examples +pv"
+IUSE="doc examples +pv squashfuse"
 
 # Extensive test suite exists, but downloads container images
 # directly and via Docker and installs packages inside using apt/yum.
@@ -32,6 +32,7 @@ REQUIRED_USE="${PYTHON_REQUIRED_USE}"
 
 RDEPEND="${PYTHON_DEPS}
 	pv? ( sys-apps/pv )
+	squashfuse? ( sys-fs/squashfuse )
 "
 DEPEND="doc? (
 		dev-python/sphinx[${PYTHON_USEDEP}]
diff --git a/sys-cluster/charliecloud/metadata.xml b/sys-cluster/charliecloud/metadata.xml
index 6db8cc60e6a47..584c307669056 100644
--- a/sys-cluster/charliecloud/metadata.xml
+++ b/sys-cluster/charliecloud/metadata.xml
@@ -18,5 +18,6 @@
   </upstream>
   <use>
     <flag name='pv'>Use sys-apps/pv to enable progress bar functionality</flag>
+    <flag name='squashfuse'>Use sys-fs/squashfuse for the SquashFS workflow</flag>
   </use>
 </pkgmetadata>