diff --git a/.circleci/config.yml b/.circleci/config.yml
index f709cba..0397494 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -42,11 +42,11 @@ commands:
           name: "Install Swig4"
           command: |
             sudo apt-get update
-            sudo apt-get install -y automake autoconf libpcre3 libpcre3-dev bison flex
+            sudo apt-get install -y automake autoconf libpcre2-dev bison flex
             echo "Installing swig"
-            curl -L -O https://github.com/swig/swig/archive/v4.0.2.tar.gz
-            tar -xzvf v4.0.2.tar.gz
-            cd swig-4.0.2/
+            curl -L -O https://github.com/swig/swig/archive/v4.4.1.tar.gz
+            tar -xzvf v4.4.1.tar.gz
+            cd swig-4.4.1/
             sh autogen.sh
             ./configure
             make
diff --git a/blst b/blst
index 6d960cd..54e6e55 160000
--- a/blst
+++ b/blst
@@ -1 +1 @@
-Subproject commit 6d960cd05d6fe2b5bc9ba161edf0c1a131b87c4c
+Subproject commit 54e6e55674722fc2797ebb4bbb71b26d881eb4b8