diff --git a/buildenv/Dockerfile.bionic b/buildenv/Dockerfile.bionic
index 68d5127..b35d38a 100644
--- a/buildenv/Dockerfile.bionic
+++ b/buildenv/Dockerfile.bionic
@@ -28,8 +28,9 @@ RUN git clone https://github.com/tdlib/td.git \
 
 COPY config_site.h /
 
-RUN git clone https://github.com/Infactum/pjproject.git \
+RUN git clone https://github.com/pjsip/pjproject.git \
     && cd pjproject \
+    && git reset --hard 2.9 \
     && cp /config_site.h pjlib/include/pj \
     && ./configure --disable-sound CFLAGS="-O3 -DNDEBUG" \
     && make dep && make && make install \
diff --git a/buildenv/Dockerfile.centos6 b/buildenv/Dockerfile.centos6
index 7f29128..6b4b04f 100644
--- a/buildenv/Dockerfile.centos6
+++ b/buildenv/Dockerfile.centos6
@@ -37,8 +37,9 @@ RUN source /opt/rh/devtoolset-7/enable \
 COPY config_site.h /
 
 RUN source /opt/rh/devtoolset-7/enable \
-    && git clone https://github.com/Infactum/pjproject.git \
+    && git clone https://github.com/pjsip/pjproject.git \
     && cd pjproject \
+    && git reset --hard 2.9 \
     && cp /config_site.h pjlib/include/pj \
     && ./configure --disable-sound CFLAGS="-O3 -DNDEBUG" \
     && make dep && make && make install \
diff --git a/buildenv/Dockerfile.centos7 b/buildenv/Dockerfile.centos7
index 79e10e9..b1c1b3a 100644
--- a/buildenv/Dockerfile.centos7
+++ b/buildenv/Dockerfile.centos7
@@ -33,8 +33,9 @@ RUN source /opt/rh/devtoolset-7/enable \
 COPY config_site.h /
 
 RUN source /opt/rh/devtoolset-7/enable \
-    && git clone https://github.com/Infactum/pjproject.git \
+    && git clone https://github.com/pjsip/pjproject.git \
     && cd pjproject \
+    && git reset --hard 2.9 \
     && cp /config_site.h pjlib/include/pj \
     && ./configure --disable-sound CFLAGS="-O3 -DNDEBUG" \
     && make dep && make && make install \