diff --git a/Dockerfile b/Dockerfile
index 10eeb69..b244633 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -118,13 +118,12 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
 
 ### PYTHON ###
 
-ARG PYENV_VERSION=v2.6.10
-ARG PYTHON_VERSIONS="3.10 3.11 3.12 3.13 3.14"
+ARG PYTHON_VERSIONS="3.14 3.13 3.12 3.11 3.10"
 
 # Install pyenv
 ENV PYENV_ROOT=/root/.pyenv
 ENV PATH=$PYENV_ROOT/bin:$PATH
-RUN git -c advice.detachedHead=0 clone --branch "$PYENV_VERSION" --depth 1 https://github.com/pyenv/pyenv.git "$PYENV_ROOT" \
+RUN git -c advice.detachedHead=0 clone --depth 1 https://github.com/pyenv/pyenv.git "$PYENV_ROOT" \
     && echo 'export PYENV_ROOT="$HOME/.pyenv"' >> /etc/profile \
     && echo 'export PATH="$PYENV_ROOT/shims:$PYENV_ROOT/bin:$PATH"' >> /etc/profile \
     && echo 'eval "$(pyenv init - bash)"' >> /etc/profile \
@@ -132,7 +131,6 @@ RUN git -c advice.detachedHead=0 clone --branch "$PYENV_VERSION" --depth 1 https
     && src/configure \
     && make -C src \
     && pyenv install $PYTHON_VERSIONS \
-    && pyenv global "${PYTHON_VERSIONS%% *}" \
     && rm -rf "$PYENV_ROOT/cache"
 
 # Install pipx for common global package managers (e.g. poetry)
@@ -238,7 +236,7 @@ RUN --mount=type=cache,target=/root/.cargo/registry \
 
 ### RUBY ###
 
-ARG RUBY_VERSIONS="3.2.3 3.3.8 3.4.4"
+ARG RUBY_VERSIONS="3.4.4 3.3.8 3.2.3"
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
     --mount=type=cache,target=/root/.cache/mise \
@@ -326,7 +324,16 @@ RUN chmod +x /opt/codex/setup_universal.sh
 ### VERIFICATION SCRIPT ###
 
 COPY verify.sh /opt/verify.sh
-RUN chmod +x /opt/verify.sh && bash -lc "/opt/verify.sh"
+RUN chmod +x /opt/verify.sh \
+    && PYTHON_VERSIONS="$PYTHON_VERSIONS" \
+        NODE_VERSIONS="24 22 20 18" \
+        RUST_VERSIONS="$RUST_VERSIONS" \
+        GO_VERSIONS="$GO_VERSIONS" \
+        SWIFT_VERSIONS="$SWIFT_VERSIONS" \
+        RUBY_VERSIONS="$RUBY_VERSIONS" \
+        PHP_VERSIONS="$PHP_VERSIONS" \
+        JAVA_VERSIONS="$( [ "$TARGETARCH" = "arm64" ] && echo "$ARM_JAVA_VERSIONS" || echo "$AMD_JAVA_VERSIONS" )" \
+        "/opt/verify.sh"
 
 ### ENTRYPOINT ###
 
diff --git a/setup_universal.sh b/setup_universal.sh
index 9507232..6b18136 100644
--- a/setup_universal.sh
+++ b/setup_universal.sh
@@ -22,6 +22,7 @@ echo "Configuring language runtimes..."
 if [ -n "${CODEX_ENV_PYTHON_VERSION}" ]; then
     echo "# Python: ${CODEX_ENV_PYTHON_VERSION}"
     pyenv global "${CODEX_ENV_PYTHON_VERSION}"
+    python3 --version
 fi
 
 if [ -n "${CODEX_ENV_NODE_VERSION}" ]; then
@@ -29,7 +30,7 @@ if [ -n "${CODEX_ENV_NODE_VERSION}" ]; then
     echo "# Node.js: v${CODEX_ENV_NODE_VERSION} (default: ${current})"
     if [ "${current}" != "v${CODEX_ENV_NODE_VERSION}" ]; then
         nvm alias default "${CODEX_ENV_NODE_VERSION}"
-        nvm use "${CODEX_ENV_NODE_VERSION}"
+        nvm use --save "${CODEX_ENV_NODE_VERSION}"
         corepack enable
     fi
 fi
@@ -39,6 +40,7 @@ if [ -n "${CODEX_ENV_RUBY_VERSION}" ]; then
     echo "# Ruby: ${CODEX_ENV_RUBY_VERSION} (default: ${current})"
     if [ "${current}" != "${CODEX_ENV_RUBY_VERSION}" ]; then
         mise use --global "ruby@${CODEX_ENV_RUBY_VERSION}"
+        ruby --version
     fi
 fi
 
@@ -47,6 +49,7 @@ if [ -n "${CODEX_ENV_RUST_VERSION}" ]; then
     echo "# Rust: ${CODEX_ENV_RUST_VERSION} (default: ${current})"
     if [ "${current}" != "${CODEX_ENV_RUST_VERSION}" ]; then
        rustup default "${CODEX_ENV_RUST_VERSION}"
+       rustc --version
     fi
 fi
 
@@ -55,6 +58,7 @@ if [ -n "${CODEX_ENV_GO_VERSION}" ]; then
     echo "# Go: go${CODEX_ENV_GO_VERSION} (default: ${current})"
     if [ "${current}" != "go${CODEX_ENV_GO_VERSION}" ]; then
         mise use --global "go@${CODEX_ENV_GO_VERSION}"
+        go version
     fi
 fi
 
@@ -63,6 +67,7 @@ if [ -n "${CODEX_ENV_SWIFT_VERSION}" ]; then
     echo "# Swift: ${CODEX_ENV_SWIFT_VERSION} (default: ${current})"
     if [ "${current}" != "${CODEX_ENV_SWIFT_VERSION}" ]; then
         swiftly use "${CODEX_ENV_SWIFT_VERSION}"
+        swift --version
     fi
 fi
 
@@ -72,6 +77,7 @@ if [ -n "${CODEX_ENV_PHP_VERSION}" ]; then
     echo "# PHP: ${CODEX_ENV_PHP_VERSION} (default: ${current})"
     if [ "${current}" != "${CODEX_ENV_PHP_VERSION}" ]; then
         phpenv global "${CODEX_ENV_PHP_VERSION}snapshot"
+        php --version
     fi
 fi
 
@@ -80,5 +86,6 @@ if [ -n "${CODEX_ENV_JAVA_VERSION}" ]; then
     echo "# Java: ${CODEX_ENV_JAVA_VERSION} (default: ${current})"
     if [ "${current}" != "${CODEX_ENV_JAVA_VERSION}" ]; then
         mise use --global "java@${CODEX_ENV_JAVA_VERSION}"
+        java -version
     fi
 fi
diff --git a/verify.sh b/verify.sh
index 38cabc8..fe9a5e8 100644
--- a/verify.sh
+++ b/verify.sh
@@ -4,19 +4,53 @@ set -euo pipefail
 
 echo "Verifying language runtimes ..."
 
+read -ra PYTHON <<< "$PYTHON_VERSIONS"
+read -ra NODE   <<< "$NODE_VERSIONS"
+read -ra RUST   <<< "$RUST_VERSIONS"
+read -ra GO     <<< "$GO_VERSIONS"
+read -ra SWIFT  <<< "$SWIFT_VERSIONS"
+read -ra RUBY   <<< "$RUBY_VERSIONS"
+read -ra PHP    <<< "$PHP_VERSIONS"
+read -ra JAVA   <<< "$JAVA_VERSIONS"
+
+max=$(printf "%s\n" \
+  ${#PYTHON[@]} \
+  ${#NODE[@]} \
+  ${#RUST[@]} \
+  ${#GO[@]} \
+  ${#SWIFT[@]} \
+  ${#RUBY[@]} \
+  ${#PHP[@]} \
+  ${#JAVA[@]} \
+  | sort -nr | head -1)
+
+for ((i=max-1; i>=0; i--)); do
+  CODEX_ENV_PYTHON_VERSION=${PYTHON[i]:-${PYTHON[0]}} \
+  CODEX_ENV_NODE_VERSION=${NODE[i]:-${NODE[0]}} \
+  CODEX_ENV_RUST_VERSION=${RUST[i]:-${RUST[0]}} \
+  CODEX_ENV_GO_VERSION=${GO[i]:-${GO[0]}} \
+  CODEX_ENV_SWIFT_VERSION=${SWIFT[i]:-${SWIFT[0]}} \
+  CODEX_ENV_RUBY_VERSION=${RUBY[i]:-${RUBY[0]}} \
+  CODEX_ENV_PHP_VERSION=${PHP[i]:-${PHP[0]}} \
+  CODEX_ENV_JAVA_VERSION=${JAVA[i]:-${JAVA[0]}} \
+  bash -lc '
+    printf "\n\nTesting setup_universal with versions:\n"
+    env | grep "^CODEX_ENV_" | sort
+    printf "\n"
+    /opt/codex/setup_universal.sh
+  '
+done
+
 echo "- Python:"
 python3 --version
 pyenv versions | sed 's/^/  /'
 
 echo "- Node.js:"
-for version in "18" "20" "22"; do
-    nvm use --global "${version}"
-    node --version
-    npm --version
-    pnpm --version
-    yarn --version
-    npm ls -g
-done
+node --version
+npm --version
+pnpm --version
+yarn --version
+npm ls -g
 
 echo "- Bun:"
 bun --version