diff --git a/kali/Dockerfile b/kali/Dockerfile
index c8b448a..ccf56cf 100644
--- a/kali/Dockerfile
+++ b/kali/Dockerfile
@@ -2,8 +2,28 @@ FROM kalilinux/kali-rolling
 
 ENV USER=root
 
+RUN set -eux; \
+    sed -i 's|https://http.kali.org|http://http.kali.org|' /etc/apt/sources.list || true; \
+    apt-get clean; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends ca-certificates; \
+    sed -i 's|http://http.kali.org|https://http.kali.org|' /etc/apt/sources.list; \
+    apt-get update --fix-missing; \
+    apt-get -y full-upgrade
+
+# ------------------------------------------------------------------------------
+# 1) Base packages, Kali/Debian tools, and common deps
+# ------------------------------------------------------------------------------
+# ------------------------------------------------------------------------------
+# 1) Base packages, Kali/Debian tools, and common deps
+# ------------------------------------------------------------------------------
+RUN set -eux; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+      sudo ca-certificates curl wget git zsh bash coreutils
+
 # Install core services and additional desktop packages
-RUN apt-get update && \
+RUN apt-get update  && \
     apt-get install -y --no-install-recommends \
       openssh-server \
       shellinabox \
@@ -50,7 +70,7 @@ RUN apt-get update && \
       && rm -rf /var/lib/apt/lists/*
 
 # installing Kali Linux core tools (Comment this out if you want a smaller and faster image build)
-RUN apt-get update && \
+RUN apt-get update --fix-missing  && \
     DEBIAN_FRONTEND=noninteractive apt-get install -y \
       kali-linux-headless \
       kali-linux-core \