diff --git a/.travis.yml b/.travis.yml
index 7a0b35bba..115639933 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,7 +14,6 @@ env:
     # During pull request builds (not push builds), use custom-built PostgreSQL
     - USE_CUSTOM_PG="${TRAVIS_PULL_REQUEST_SHA}"
   matrix:
-    - PGVERSION=9.5
     - PGVERSION=9.6
     - PGVERSION=10
 before_install:
diff --git a/configure b/configure
index 27f434469..b9cb8c908 100755
--- a/configure
+++ b/configure
@@ -2005,7 +2005,7 @@ if test -z "$version_num"; then
   as_fn_error $? "Could not detect PostgreSQL version from pg_config." "$LINENO" 5
 fi
 
-if test "$version_num" != '9.5' -a "$version_num" != '9.6' -a "$version_num" != '10'; then
+if test "$version_num" != '9.6' -a "$version_num" != '10'; then
    as_fn_error $? "Citus is not compatible with the detected PostgreSQL version ${version_num}." "$LINENO" 5
 else
    { $as_echo "$as_me:${as_lineno-$LINENO}: building against PostgreSQL $version_num" >&5
diff --git a/configure.in b/configure.in
index f546e7dee..46e628e46 100644
--- a/configure.in
+++ b/configure.in
@@ -59,7 +59,7 @@ if test -z "$version_num"; then
   AC_MSG_ERROR([Could not detect PostgreSQL version from pg_config.])
 fi
 
-if test "$version_num" != '9.5' -a "$version_num" != '9.6' -a "$version_num" != '10'; then
+if test "$version_num" != '9.6' -a "$version_num" != '10'; then
    AC_MSG_ERROR([Citus is not compatible with the detected PostgreSQL version ${version_num}.])
 else
    AC_MSG_NOTICE([building against PostgreSQL $version_num])