diff --git a/Dockerfile.mingw b/Dockerfile.mingw
index f1ef4b17..5d13624e 100644
--- a/Dockerfile.mingw
+++ b/Dockerfile.mingw
@@ -33,7 +33,7 @@ RUN apt-get update && \
 RUN curl -k -L -O https://ftp.gnu.org/gnu/gmp/gmp-6.3.0.tar.xz && \
     curl -k -L -O https://github.com/libexpat/libexpat/releases/download/R_2_5_0/expat-2.5.0.tar.bz2 && \
     curl -k -L -O https://www.sqlite.org/2023/sqlite-autoconf-3430100.tar.gz && \
-    curl -k -L -O http://zlib.net/fossils/zlib-1.2.11.tar.gz && \
+    curl -k -L -O https://zlib.net/fossils/zlib-1.2.11.tar.gz && \
     curl -k -L -O https://c-ares.org/download/c-ares-1.19.1.tar.gz && \
     curl -k -L -O https://libssh2.org/download/libssh2-1.11.0.tar.bz2