diff --git a/cmake/Modules/Packages/PLUMED.cmake b/cmake/Modules/Packages/PLUMED.cmake
index 0f063f3e14..6b832574ca 100644
--- a/cmake/Modules/Packages/PLUMED.cmake
+++ b/cmake/Modules/Packages/PLUMED.cmake
@@ -54,8 +54,8 @@ if(DOWNLOAD_PLUMED)
     set(PLUMED_BUILD_BYPRODUCTS "<INSTALL_DIR>/lib/libplumedWrapper.a")
   endif()
 
-  set(PLUMED_URL "https://github.com/plumed/plumed2/releases/download/v2.7.2/plumed-src-2.7.2.tgz" CACHE STRING "URL for PLUMED tarball")
-  set(PLUMED_MD5 "cfa0b4dd90a81c25d3302e8d97bfeaea" CACHE STRING "MD5 checksum of PLUMED tarball")
+  set(PLUMED_URL "https://github.com/plumed/plumed2/releases/download/v2.7.3/plumed-src-2.7.3.tgz" CACHE STRING "URL for PLUMED tarball")
+  set(PLUMED_MD5 "f00cc82edfefe6bb3df934911dbe32fb" CACHE STRING "MD5 checksum of PLUMED tarball")
 
   mark_as_advanced(PLUMED_URL)
   mark_as_advanced(PLUMED_MD5)
diff --git a/lib/plumed/Install.py b/lib/plumed/Install.py
index 548e51a5bc..5cd3f776cb 100644
--- a/lib/plumed/Install.py
+++ b/lib/plumed/Install.py
@@ -51,9 +51,11 @@ checksums = { \
         '2.6.0' : '204d2edae58d9b10ba3ad460cad64191', \
         '2.6.1' : '89a9a450fc6025299fe16af235957163', \
         '2.6.3' : 'a9f8028fd74528c2024781ea1fdefeee', \
+        '2.6.5' : 'b67356f027e5c2747823b0422c3b0ec2', \
         '2.7.0' : '95f29dd0c067577f11972ff90dfc7d12', \
         '2.7.1' : '4eac6a462ec84dfe0cec96c82421b8e8', \
         '2.7.2' : 'cfa0b4dd90a81c25d3302e8d97bfeaea', \
+        '2.7.3' : 'f00cc82edfefe6bb3df934911dbe32fb', \
         }
 
 # parse and process arguments