diff --git a/docker/Dockerfile b/docker/Dockerfile
index e9015270..bcc213e6 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -3,8 +3,10 @@ FROM ghcr.io/linuxserver/baseimage-alpine:edge
 ###############################################################################
 # YTDL-SUB INSTALL
 
-# Needed for phantomjs
+# For phantomjs
 ENV OPENSSL_CONF="/etc/ssl"
+# For downloading thumbnails
+ENV SSL_CERT_DIR="/etc/ssl/certs/"
 
 COPY root/ /
 RUN mkdir -p /config && \
diff --git a/docker/Dockerfile.gui b/docker/Dockerfile.gui
index bd745f0e..0b095a27 100644
--- a/docker/Dockerfile.gui
+++ b/docker/Dockerfile.gui
@@ -1,7 +1,9 @@
 FROM lscr.io/linuxserver/code-server:4.18.0-ls181
 
-# Needed for phantomjs
-ENV OPENSSL_CONF=/etc/ssl
+# For phantomjs
+ENV OPENSSL_CONF="/etc/ssl"
+# For downloading thumbnails
+ENV SSL_CERT_DIR="/etc/ssl/certs/"
 
 ###############################################################################
 # YTDL-SUB INSTALL
diff --git a/docker/Dockerfile.ubuntu b/docker/Dockerfile.ubuntu
index 798e07a3..bef0f137 100644
--- a/docker/Dockerfile.ubuntu
+++ b/docker/Dockerfile.ubuntu
@@ -3,8 +3,10 @@ FROM ghcr.io/linuxserver/baseimage-ubuntu:jammy
 # https://askubuntu.com/questions/972516/debian-frontend-environment-variable
 ARG DEBIAN_FRONTEND=noninteractive
 
-# Needed for phantomjs
-ENV OPENSSL_CONF=/etc/ssl
+# For phantomjs
+ENV OPENSSL_CONF="/etc/ssl"
+# For downloading thumbnails
+ENV SSL_CERT_DIR="/etc/ssl/certs/"
 
 ###############################################################################
 # YTDL-SUB INSTALL