diff --git a/bin/wally-distro-check.sh b/bin/wally-distro-check.sh
index bd4de121b..5dfbf015e 100755
--- a/bin/wally-distro-check.sh
+++ b/bin/wally-distro-check.sh
@@ -91,8 +91,8 @@ elif [[ "$ID" == debian || "$ID_LIKE" == *debian* ]]; then
             "is $PRETTY_NAME. The regular Debian install will be attempted, but there may be issues."
     fi
     export DEBIAN_VERSION="$VERSION_ID"
-    if (( DEBIAN_VERSION < 12 )); then
-        printf "${FAIL_COLOR}%s\n${ENDC}" "The Wally install script has only been tested with Debian version 12. You have version $VERSION."
+    if (( DEBIAN_VERSION < 11 )); then
+        printf "${FAIL_COLOR}%s\n${ENDC}" "The Wally install script has only been tested with Debian versions 11 and 12. You have version $VERSION."
         exit 1
     fi
 else
diff --git a/bin/wally-package-install.sh b/bin/wally-package-install.sh
index e780298bd..fe3c9bf1c 100755
--- a/bin/wally-package-install.sh
+++ b/bin/wally-package-install.sh
@@ -71,8 +71,12 @@ elif [[ "$FAMILY" == ubuntu || "$FAMILY" == debian ]]; then
         OTHER_PACKAGES+=(gcc-10 g++-10 cpp-10) # Newer version of gcc needed for Verilator
     elif (( DEBIAN_VERSION >= 12 )); then
         PYTHON_VERSION=python3.11
-    if (( UBUNTU_VERSION != 20 )); then
-        VERILATOR_PACKAGES+=(mold) # Not availale in Ubuntu 20.04, binary will be downloaded instead
+    elif (( DEBIAN_VERSION >= 11 )); then
+        PYTHON_VERSION=python3.9
+    fi
+    # Mold not available in older distros for Verilator, will download binary instead
+    if (( UBUNTU_VERSION != 20 && DEBIAN_VERSION != 11 )); then
+        VERILATOR_PACKAGES+=(mold)
     fi
     PACKAGE_MANAGER="DEBIAN_FRONTEND=noninteractive apt-get"
     UPDATE_COMMAND="sudo $PACKAGE_MANAGER update -y && sudo $PACKAGE_MANAGER upgrade -y --with-new-pkgs"
diff --git a/bin/wally-tool-chain-install.sh b/bin/wally-tool-chain-install.sh
index c22aed822..10c4276c7 100755
--- a/bin/wally-tool-chain-install.sh
+++ b/bin/wally-tool-chain-install.sh
@@ -264,7 +264,7 @@ if (( RHEL_VERSION == 8 )); then
 fi
 
 # Mold needed for Verilator
-if (( UBUNTU_VERSION == 20 )); then
+if (( UBUNTU_VERSION == 20  || DEBIAN_VERSION == 11 )); then
     STATUS="mold"
     if [ ! -e "$RISCV"/bin/mold ]; then
         section_header "Installing mold"