diff --git a/build-aux/modules/40-plog.json b/build-aux/modules/40-plog.json
index 1ca28e7b5..08bee9bc9 100644
--- a/build-aux/modules/40-plog.json
+++ b/build-aux/modules/40-plog.json
@@ -2,6 +2,7 @@
     "name": "plog",
     "buildsystem": "cmake-ninja",
     "config-opts": [
+        "-DCMAKE_BUILD_TYPE=Release",
         "-DPLOG_BUILD_SAMPLES=OFF"
     ],
     "cleanup": [
diff --git a/build-aux/modules/40-usrsctp.json b/build-aux/modules/40-usrsctp.json
index b9442f209..b83e23f5d 100644
--- a/build-aux/modules/40-usrsctp.json
+++ b/build-aux/modules/40-usrsctp.json
@@ -3,6 +3,7 @@
     "buildsystem": "cmake-ninja",
     "//": "Disable SCTP IP code. Packets are handle by WebRTC so we don't need it",
     "config-opts": [
+        "-DCMAKE_BUILD_TYPE=Release",
         "-Dsctp_build_shared_lib=ON",
         "-Dsctp_build_programs=OFF",
         "-Dsctp_inet=OFF",
diff --git a/build-aux/modules/50-libdatachannel.json b/build-aux/modules/50-libdatachannel.json
index 340d3d48f..381e047c8 100644
--- a/build-aux/modules/50-libdatachannel.json
+++ b/build-aux/modules/50-libdatachannel.json
@@ -2,6 +2,7 @@
     "name": "libdatachannel",
     "buildsystem": "cmake-ninja",
     "config-opts": [
+        "-DCMAKE_BUILD_TYPE=Release",
         "-DNO_EXAMPLES=ON",
         "-DNO_TESTS=ON",
         "-DNO_WEBSOCKET=ON",
diff --git a/build-aux/modules/50-libqrcodegencpp.json b/build-aux/modules/50-libqrcodegencpp.json
index ed20a7f42..968e98742 100644
--- a/build-aux/modules/50-libqrcodegencpp.json
+++ b/build-aux/modules/50-libqrcodegencpp.json
@@ -3,6 +3,7 @@
     "buildsystem": "cmake-ninja",
     "builddir": true,
     "config-opts": [
+        "-DCMAKE_BUILD_TYPE=Release",
         "-DBUILD_SHARED_LIBS=ON"
     ],
     "post-install": [