diff --git a/debian/changelog b/debian/changelog
index eaec298..65af73b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -9,6 +9,8 @@ shim (15+1613861442.888f5b5-1) unstable; urgency=medium
       - fixup_git.patch
       - uname.patch
       - use_compare_mem_gcc9.patch
+  * New patches:
+    + Trivial change to remove bashisms in Make.coverity
   * Switch to using gcc-10 rather than gcc-9. Closes: #978521
 
  -- Steve McIntyre <93sam@debian.org>  Sun, 21 Feb 2021 13:50:16 +0100
diff --git a/debian/patches/fix-Make.coverity-bashisms.patch b/debian/patches/fix-Make.coverity-bashisms.patch
new file mode 100644
index 0000000..c1cdeb9
--- /dev/null
+++ b/debian/patches/fix-Make.coverity-bashisms.patch
@@ -0,0 +1,26 @@
+diff --git a/Make.coverity b/Make.coverity
+index 996e826e..a897aa0a 100644
+--- a/Make.coverity
++++ b/Make.coverity
+@@ -12,7 +12,7 @@ cov-int-all : clean
+ 
+ cov-clean :
+ 	@rm -vf $(NAME)-coverity-*.tar.*
+-	@if [[ -d cov-int ]]; then rm -rf cov-int && echo "removed 'cov-int'"; fi
++	@if [ -d cov-int ]; then rm -rf cov-int && echo "removed 'cov-int'"; fi
+ 
+ cov-file : | $(COV_FILE)
+ 
+@@ -20,9 +20,9 @@ $(COV_FILE) : | cov-int
+ 	tar caf $@ cov-int
+ 
+ cov-upload :
+-	@if [[ -n "$(COV_URL)" ]] &&					\
+-	    [[ -n "$(COV_TOKEN)" ]] &&					\
+-	    [[ -n "$(COV_EMAIL)" ]] ;					\
++	@if [ -n "$(COV_URL)" ] &&					\
++	    [ -n "$(COV_TOKEN)" ] &&					\
++	    [ -n "$(COV_EMAIL)" ] ;					\
+ 	then								\
+ 		echo curl --form token=$(COV_TOKEN) --form email="$(COV_EMAIL)" --form file=@"$(COV_FILE)" --form version=$(VERSION).1 --form description="$(COMMIT_ID)" "$(COV_URL)" ; \
+ 		curl --form token=$(COV_TOKEN) --form email="$(COV_EMAIL)" --form file=@"$(COV_FILE)" --form version=$(VERSION).1 --form description="$(COMMIT_ID)" "$(COV_URL)" ; \
diff --git a/debian/patches/series b/debian/patches/series
index e69de29..30f2571 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -0,0 +1 @@
+fix-Make.coverity-bashisms.patch