thodg/libgit2

diff --git a/ci/docker/focal b/ci/docker/focal
index c6fefc7..ce97268 100644
--- a/ci/docker/focal
+++ b/ci/docker/focal
@@ -48,9 +48,9 @@ RUN cd /tmp && \
 
 FROM mbedtls AS libssh2
 RUN cd /tmp && \
-    curl --insecure --location --silent --show-error https://www.libssh2.org/download/libssh2-1.8.2.tar.gz | \
+    curl --insecure --location --silent --show-error https://www.libssh2.org/download/libssh2-1.9.0.tar.gz | \
         tar -xz && \
-    cd libssh2-1.8.2 && \
+    cd libssh2-1.9.0 && \
     mkdir build build-msan && \
     cd build && \
     CC=clang-10 CFLAGS="-fPIC" cmake -G Ninja -DBUILD_SHARED_LIBS=ON -DCRYPTO_BACKEND=Libgcrypt -DCMAKE_PREFIX_PATH=/usr/local -DCMAKE_INSTALL_PREFIX=/usr/local .. && \
@@ -59,7 +59,7 @@ RUN cd /tmp && \
     CC=clang-10 CFLAGS="-fPIC -fsanitize=memory -fno-optimize-sibling-calls -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer" LDFLAGS="-fsanitize=memory" cmake -G Ninja -DBUILD_SHARED_LIBS=ON -DCRYPTO_BACKEND=mbedTLS -DCMAKE_PREFIX_PATH=/usr/local/msan -DCMAKE_INSTALL_PREFIX=/usr/local/msan .. && \
     ninja install && \
     cd .. && \
-    rm -rf libssh2-1.8.2
+    rm -rf libssh2-1.9.0
 
 FROM libssh2 AS valgrind
 RUN cd /tmp && \