diff --git a/Dockerfile.template b/Dockerfile.template
index 87137004..618a76e6 100644
--- a/Dockerfile.template
+++ b/Dockerfile.template
@@ -150,6 +150,7 @@ RUN cd ${CURL_VERSION} && \
     ./configure --prefix=/build/install \
                 --enable-static \
                 --disable-shared \
+                --enable-websockets \
                 --with-nghttp2=/build/${NGHTTP2_VERSION}/installed \
                 --with-brotli=/build/brotli-${BROTLI_VERSION}/build/installed \
 {{#firefox}}
diff --git a/Makefile.in b/Makefile.in
index 2d3ccd00..fb0813c3 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -364,6 +364,7 @@ $(CURL_VERSION)/.firefox: $(firefox_libs) $(CURL_VERSION).tar.xz $(CURL_VERSION)
 	  config_flags+=" --with-nghttp2=$(nghttp2_install_dir)"; \
 	  config_flags+=" --with-brotli=$(brotli_install_dir)"; \
 	  config_flags+=" --with-nss=$(nss_install_dir) --with-nss-deprecated"; \
+	  config_flags+=" --enable-websockets"; \
 	  config_flags+=" USE_CURL_SSLKEYLOGFILE=true"; \
 	  if test "$(static_build)" = "yes"; then \
 	    config_flags+=" --enable-static --disable-shared"; \
@@ -404,6 +405,7 @@ $(CURL_VERSION)/.chrome: $(chrome_libs)	$(CURL_VERSION).tar.xz $(CURL_VERSION)/.
 	  config_flags="$$config_flags --with-nghttp2=$(nghttp2_install_dir)"; \
 	  config_flags="$$config_flags --with-brotli=$(brotli_install_dir)"; \
 	  config_flags="$$config_flags --with-openssl=$(boringssl_install_dir)"; \
+	  config_flags="$$config_flags --enable-websockets"; \
 	  config_flags="$$config_flags USE_CURL_SSLKEYLOGFILE=true"; \
 	  if test "$(static_build)" = "yes"; then \
 	    config_flags="$$config_flags --enable-static --disable-shared";
diff --git a/chrome/Dockerfile b/chrome/Dockerfile
index bbc1ade2..69d87521 100644
--- a/chrome/Dockerfile
+++ b/chrome/Dockerfile
@@ -91,6 +91,7 @@ RUN cd ${CURL_VERSION} && \
     ./configure --prefix=/build/install \
                 --enable-static \
                 --disable-shared \
+                --enable-websockets \
                 --with-nghttp2=/build/${NGHTTP2_VERSION}/installed \
                 --with-brotli=/build/brotli-${BROTLI_VERSION}/build/installed \
                 --with-openssl=/build/boringssl/build \
diff --git a/chrome/Dockerfile.alpine b/chrome/Dockerfile.alpine
index 6c43344a..57e2ced2 100644
--- a/chrome/Dockerfile.alpine
+++ b/chrome/Dockerfile.alpine
@@ -84,6 +84,7 @@ RUN cd ${CURL_VERSION} && \
     ./configure --prefix=/build/install \
                 --enable-static \
                 --disable-shared \
+                --enable-websockets \
                 --with-nghttp2=/build/${NGHTTP2_VERSION}/installed \
                 --with-brotli=/build/brotli-${BROTLI_VERSION}/build/installed \
                 --with-openssl=/build/boringssl/build \
diff --git a/firefox/Dockerfile b/firefox/Dockerfile
index 38eb9f25..ae34a33f 100644
--- a/firefox/Dockerfile
+++ b/firefox/Dockerfile
@@ -85,6 +85,7 @@ RUN cd ${CURL_VERSION} && \
     ./configure --prefix=/build/install \
                 --enable-static \
                 --disable-shared \
+                --enable-websockets \
                 --with-nghttp2=/build/${NGHTTP2_VERSION}/installed \
                 --with-brotli=/build/brotli-${BROTLI_VERSION}/build/installed \
                 --with-nss=/build/${NSS_VERSION}/dist/Release \
diff --git a/firefox/Dockerfile.alpine b/firefox/Dockerfile.alpine
index eb43d833..0faba0d1 100644
--- a/firefox/Dockerfile.alpine
+++ b/firefox/Dockerfile.alpine
@@ -74,6 +74,7 @@ RUN cd ${CURL_VERSION} && \
     ./configure --prefix=/build/install \
                 --enable-static \
                 --disable-shared \
+                --enable-websockets \
                 --with-nghttp2=/build/${NGHTTP2_VERSION}/installed \
                 --with-brotli=/build/brotli-${BROTLI_VERSION}/build/installed \
                 --with-nss=/build/${NSS_VERSION}/dist/Release \