diff --git a/simplerisk/Dockerfile b/simplerisk/Dockerfile
index c5e6a0a..300327a 100644
--- a/simplerisk/Dockerfile
+++ b/simplerisk/Dockerfile
@@ -61,7 +61,8 @@ RUN dpkg-divert --local --rename /usr/bin/ischroot && \
                                                                               curl \
                                                                               ca-certificates \
                                                                               supervisor && \
-    rm -rf /var/lib/apt/lists
+    rm -rf /var/lib/apt/lists && \
+    update-ca-certificates
 
 # Create the OpenSSL password
 RUN echo "$(< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c${1:-32})" > /passwords/pass_openssl.txt
diff --git a/simplerisk/generate_dockerfile.sh b/simplerisk/generate_dockerfile.sh
index 8a9c214..7716e87 100755
--- a/simplerisk/generate_dockerfile.sh
+++ b/simplerisk/generate_dockerfile.sh
@@ -83,7 +83,8 @@ RUN dpkg-divert --local --rename /usr/bin/ischroot && \\
                                                                               curl \\
                                                                               ca-certificates \\
                                                                               supervisor && \\
-    rm -rf /var/lib/apt/lists
+    rm -rf /var/lib/apt/lists && \\
+    update-ca-certificates
 
 # Create the OpenSSL password
 RUN echo "\$(< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c\${1:-32})" > /passwords/pass_openssl.txt